329 results on '"Healey E"'
Search Results
102. George Helliesen, Speech Therapy for the Severe Older Adolescent and Adult Stutterer: A Program for Change, Apollo Press, Inc. 270 Enterprise Drive, Newport News, VA 23603 (129 pages, paperback).
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Healey, E. Charles
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- 2007
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103. Acoustic Measures of Stutterers' and Nonstutterers' Fluency in Two Speech Contexts
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Healey, E. Charles and Ramig, Peter R.
- Abstract
The purpose of this study was to compare stutterers' and nonstutterers' fluency during multiple productions of two dissimilar speech contexts. Twenty-two adult stutterers were matched within 1 year of age to 22 nonstutterers. Spectrographic analyses were performed on subjects' five consecutively fluent productions of a simple isolated phrase and a phrase extracted from an oral reading passage. Measures of fluent voice onset time (VOT), and vowel, consonant, and total phrase durations were calculated from the five repetitions of each phrase. From the isolated phrase, there were a total of five fluent durational measures (i.e., one VOT, two vowel, one consonant, & one phrase duration). For the phrase taken from the oral reading passage, six fluent measures were obtained (i.e., one VOT, three vowel, one consonant, & one phrase duration). Results demonstrated that only one of the five measurements taken during the isolated phrase condition was significantly different between the groups. Three of the six measures obtained from the phrase taken from the oral reading condition revealed significant between-group differences. No group differences were associated with the repetitions of either phrase for any of the dependent measures for both groups. These findings suggest that the length and complexity of the speech tasks used to obtain acoustic measures of stutterers' fluency play an important role in the discovery of differences between the fluency of the two groups.
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- 1986
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104. Analysis ofStutterers' Voice Onset Times and Fundamental Frequency Contours during Fluency
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Healey, E. Charles and Gutkin, Barbara
- Abstract
The purpose of this study was to examine stutterers' and nonstutterers' fluent voice onset time (VOT) and fundamental frequency (F0) contour measures from target syllables located at the beginning of a carrier phrase. Ten adult male stutterers were matched within one year of age with 10 adult male nonstutterers. Oscillographic and spectrographic analyses of subjects' VOT and F0at vowel onset, average vowel F0, and speed and range of Fo change were obtained from fluent productions of 18 stop consonant-vowel syllables. Results showed that VOTs for voiced stops and the range of F0change for voiceless stops were associated with significant between-group differences. All other dependent measures were not significantly different between the two groups. When eompared with past research, these findings indicate that greater differences emerge between stutterers and nonstutterers when measures of fluency are taken at the beginning than in the middle of a carrier phrase. Implications for future research are discussed.
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- 1984
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105. The Excavation of Two Round Barrows at Trelystan, Powys
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Britnell, William, Darvill, T. C., Dresser, P. Q., Ehrenberg, M. R., Healey, E., Hillman, G., Keeley, H. C. M., Morgan, G. C., Northover, J. P., and Wilkinson, J. L.
- Abstract
The excavation of two adjacent round barrows at Trelystan, Long Mountain, Powys, in 1979, has revealed a complex sequence of Late Neolithic and Early Bronze Age funerary structures and traces of Late Neolithic settlement. The earliest structure was a large pit grave, dated to about 2400 bc, which was superseded at about 2200 bc by a settlement represented by stake-walled buildings associated with Grooved Ware. Following this some activity took place, possibly domestic, which is represented by sherds probably derived from several southern Beakers, which by analogy with sites elsewhere are to be dated to a period after about 1850 bc. The subsequent Bronze Age cemetery, dated to between about 1800 and 1500 bc (but possibly continuing later), presents a sequence of burial types and structures which can broadly be seen to illustrate a change from the concept of barrow cemetery to that of cemetery barrow. The earliest burials, which consist of cremations in pits and occasionally accompanied by a Food Vessel, were covered by separate small mounds of stone or turf, or a combination of the two. These were eventually overlain by and amalgamated beneath two larger turf barrows associated with Food Vessel Urns, which employed stake circles in their construction and which acted as repositories for additional cremation burials. The cemetery was sited along a pre-existing boundary fence, set up after the Late Neolithic phase, which was renewed at various times throughout the life of the cemetery in response to changes in its layout. A small undated cemetery of inhumation graves, possibly of the Early Christian period, was founded on the eastern side of the barrows at a later date.
- Published
- 1982
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106. Factors Contributing to the Reduction of Stuttering during Singing
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Healey, E. Charles, Mallard, A. R., and Adams, Martin R.
- Abstract
This study was conducted to determine if the reduction of stuttering typically observed during singing is associated with altered vocalization or the familiarity of the melody and lyrics of the song sung by the stutterer, or both. Subjects were eight adult male stutterers. Prior to testing, each of these individuals demonstrated that he knew the melody and lyrics of a well-known song from memory. Subsequently, subjects were asked to read these lyrics aloud and then sing them. Next, subjects had to read aloud and then sing a set of unfamiliar lyrics to the conventional melody of the same song. The stutterers' reading and singing performances were audiotaped. The dependent measures of utterance duration and stuttering frequency were extracted from the tapes. Results showed that subjects' utterance durations were significantly longer during singing than reading. The main effects of singing and familiarity were both associated with significant reductions in stuttering frequency. The greatest decrement in stuttering occurred in the condition where subjects sang the familiar melody and lyrics. These findings were interpreted to mean that changes in vocalization cannot account for all of the decrease in stuttering that occurs during singing. During song, the familiarity of the melody and lyrics being produced may also affect stuttering frequency.
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- 1976
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107. The Street House Wossit: The Excavation of a Late Neolithic and Early Bronze Age Palisaded Ritual Monument at Street House, Loftus, Cleveland
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Vyner, B. E., Ambers, J., Healey, E., Innes, J., Jelley, D., Nye, S., Parker, S., and Turner, J.
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As part of a continuing programme of assessment and investigation of prehistoric activity in the coastal area of E Cleveland, Cleveland County Archaeology Section excavated an insubstantial and enigmatic monument which had a ritual use continuing from the late Neolithic into the early Bronze Age.
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- 1988
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108. The Neolithic Causewayed Enclosure at Staines, Surrey: Excavations 1961–63
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Robertson-Mackay, Reay, Butcher, S., Cameron, F., Chandra, H., Conway, B., Dawes, J., Dimes, F., Grigson, C., Healey, E., Helbaek, H., Higgs, E., Hodges, H., Pengelly, H., and Whittle, A.
- Abstract
The partial excavation under rescue conditions in 1961–63 of the ditches and interior of an enclosure of the earlier neolithic period is described. The enclosure, covering a total area of approximately 2.4 ha, was defined by double concentric interrupted ditches, which were for the most part naturally filled. There were many traces of activity within the interior, presumed to be contemporary with the ditches, including pits, gullies, post- and stake-holes, and varying concentrations of struck and burnt flint and pottery. Human burials were found. There is a little Ebbsfleet pottery in secondary contexts and there are later prehistoric, Roman and medieval finds. It is probably not possible to ascribe a single or specific role to the site, which may have been important as a place where several activities were concentrated, including occupation, subsistence, exchange, enclosure or defence, burial and ritual.
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- 1987
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109. The Colour Change of the Minnow (Phoxinus Laevis Ag.)
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Healey, E. G.
- Abstract
Minnows were subjected to spinal section at different levels between vertebrae 4 and 15, and the degree of dispersion of all the main melanophore regions was recorded in terms of the melanophore index. Records were made of the times required to reach equilibrium (a) when the fish were placed after the operation on a black or white illuminated background, and (b) when the fish at equilibrium on a black or white background were subjected to background reversal. These records show that the times necessary for the melanophores to reach equilibrium on a given background are of the same order at all the vertebral levels investigated. There is considerable variation in the degree of dispersion of similar melanophore regions of different individuals under the same conditions of operation and background. The nature of these individual differences is not known. Apart from the possibility of incomplete section of chromatic nerve fibres near the 15th vertebra, there appears to be no correlation between the chromatic behaviour and the level of the operation ; i.e. there is no indication that any activity of the spinal paling centre is being affected by spinal section at the different levels. The results of experiments involving the elimination of the spinal paling centre were tested statistically. Within the limits of this treatment, based upon the melanophore index, it was concluded that the spinal paling centre plays no part in these colour changes. Spinal section was carried out anterior to the 1st spinal nerve in order to interrupt the path of von Gelei’s dispersing fibres. Statistical treatment of the results indicates that these fibres are playing no part in these colour changes. Experiments involving combined spinal and autonomic section confirm the conclusions given in paragraphs 6 and 7. Since no activity of the nervous system arising from the spinal paling centre or resulting from the background through von Gelei’s dispersing fibres appears to be involved, the colour changes of these spinal minnows in response to illuminated backgrounds must be controlled by hormones alone. In these spinal fish the various melanophore regions do not all react equally in terms of the melanophore index. Thus, those of the lateral stripe and associated dark pattern tend to have relatively higher M.I. values under all conditions.
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- 1954
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110. The Colour Change of the Minnow (Phoxinus Laevis AG.)*
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Healey, E. G.
- Abstract
Records were made of the times required for the melanophores of the normal minnow to reach equilibrium when the fish is transferred from one to another of the following conditions : on an illuminated white background; on an illuminated black background; in darkness. These times give further evidence of the parts played by nervous and hormonal mechanisms in the colour change of the minnow. After section of the spinal cord between the 5th and the 12th vertebrae the fish darkens but gradually becomes pale again if kept on an illuminated white background. Such fish can still show a slow colour change: dark on a black background, pale on a white background and intermediate in darkness. Observations of the times required for these colour changes in the spinal minnow show that these no longer resemble those associated with the unoperated fish; rather, they resemble the time intervals associated with amphibian colour change. Further consideration of the times required for colour change in the spinal minnow indicate that there is not only a hormone causing aggregation of the melanophores but also a hormone causing melanophore dispersion. The part played by double innervation of the melanophores is considered.
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- 1951
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111. Optimal primary care management of clinical osteoarthritis and joint pain in older people: a mixed-methods programme of systematic reviews, observational and qualitative studies, and randomised controlled trials
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Hay E, Dziedzic K, Foster N, Peat G, van der Windt D, Bartlam B, Blagojevic-Bucknall M, Edwards J, Healey E, Holden M, Hughes R, Jinks C, Jordan K, and Croft P
112. Fingerprinting Organic Lead Species in Automotive Gasolines and Free Products Using Direct Injection GC/MS
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Healey, E., Smith, S. A., Mccarthy, K. J., Scott Stout, Uhler, R. M., Uhler, A. D., Emsbo-Mattingly, S. D., and Douglas, G. S.
113. Healthcare costs and productivity losses directly attributable to ankylosing spondylitis
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Rafia, R., Ara, R., Packham, J., Kirstie Haywood, and Healey, E.
114. Comparative effectiveness of 5-fluorouracil with and without oxaliplatin in the treatment of colorectal cancer in clinical practice
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Healey, E., Stillfried, G. E., Eckermann, S., James Dawber, Clingan, P. R., and Ranson, M.
115. The effects of duration and frequency of occurrence of voiceless fricatives on listeners' perceptions of sound prolongations
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Kawai, Norimune, Healey, E. Charles, Carrell, Thomas D, Kawai, Norimune, Healey, E. Charles, and Carrell, Thomas D
- Abstract
The present study examined listeners' identification and rating of words in passages as stuttered when the duration and frequency of occurrence of sound prolongations were manipulated. Thirty-six participants listened to a 219-word passage containing voiceless fricatives digitally increased from their normal durations to 200, 300, and 420 ms. Listeners heard one of three passages that contained 5%, 10% or 15% altered stimuli within the passage. In Condition 1, listeners identified words considered stuttered. In Condition 2, listeners rated specifically selected words in the passage relative to the extent they considered the words stuttered. The results showed that (1) both the duration and the frequency of occurrence of the altered phonemes within the paragraph length material had an impact on listeners' perception of words identified as a sound prolongation; (2) listeners gave significantly higher ratings in Condition 2 than Condition 1 when determining if a word was stuttered or produced fluently. The implications of these results are discussed. Learning outcomes: After reading this article, the reader will be able to: (1) Describe the past literature on listener perceptions of stuttering. (2) Differentiate between listener's perceptions of sound prolongations that are altered in duration and frequency of occurrence. (3) Describe how paragraph-length speech material compares to past research that has used isolated utterances.
116. Communication attitudes of Japanese school-age children who stutter
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Kawai, Norimune, Healey, E. Charles, Nagasawa, Taiko, Vanryckeghem, Martine, Kawai, Norimune, Healey, E. Charles, Nagasawa, Taiko, and Vanryckeghem, Martine
- Abstract
Past research with the Communication Attitude Test (CAT) has shown it to be a valid and reliable instrument for assessing speech-associated attitude of children who stutter (CWS). However, in Japan, the CAT has not been used extensively to examine the communication attitude of CWS. The purpose of this study was to determine if a Japanese version of the CAT could differentiate between the communication attitude of Japanese elementary school CWS and children who do not stutter (CWNS). A Japanese translation of the 1991-revised version of the Communication Attitude Test-Revised (CAT-R) was used in this study. Eighty Japanese CWS and 80 gender- and grade levelmatched CWNS participated in the study. The results showed that CWS had a significantly more negative communication attitude than CWNS. Both CWS and CWNS in 1st grade showed significantly more positive communication attitudes than the same children in 3rd, 4th, 5th, and 6th grades. Furthermore, a link between stuttering severity and CWS’ communication attitude was found. Additional research is needed to confirm the results of current study, which indicate that the communication attitude of Japanese CWS becomes more negative as they get older.
117. Comments on Laryngeal Behavior During Stuttering
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Healey, E. Charles, primary and Turton, Lawrence J., additional
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- 1979
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118. Factors Contributing to the Reduction of Stuttering during Singing
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Healey, E. Charles, primary, Mallard, A. R., additional, and Adams, Martin R., additional
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- 1976
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119. ?Cledemutha: A Late Saxon Burh in North Wales
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Manley, J., primary, Brassil, K., additional, Browne, S., additional, Courtney, P., additional, Healey, E., additional, Rowley-Conwy, P., additional, Tomlinson, P., additional, and Williams, D., additional
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- 1987
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120. Effect of posture on vital capacity
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Appel, M., primary, Childs, A., additional, Healey, E., additional, Markowitz, S., additional, Wong, S., additional, and Mead, J., additional
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- 1986
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121. Experimental Evidence for Regeneration following Spinal Section in the Minnow (Phoxinus phoxinus L.)
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HEALEY, E. G., primary
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- 1962
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122. Description of the Shore Test of Propulsion Plant for DDH-280 Class Gas Turbine Destroyers
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Legallais, N. H., primary and Healey, E. J., additional
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- 1970
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123. The Sea Trials of the DDH 280 Class Destroyers
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Healey, E. J., primary
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- 1973
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124. �ber den Farbwechsel der Elritze (Phoxinus laevis AG.)
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Healey, E. G., primary
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- 1940
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125. Physical activity in people with osteoarthritis and comorbidity : a multi-method study
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McKevitt, Sarah, Quicke, J. G., Healey, E. L., and Jinks, C.
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616.7 ,RC925 Diseases of the musculoskeletal system - Abstract
Osteoarthritis (OA) is common and associated with one of the highest comorbidity rates. OA clinical guidelines recommend physical activity (PA) as core treatment, irrespective of comorbidity. However, no current synthesis of the effectiveness of PA for people with OA and comorbidity exists. The impact of comorbidity on the uptake and experience of PA in this population is unknown and how to successfully implement PA interventions within primary care for people with OA and comorbidity remains unclear. This thesis addressed these three research gaps. A systematic review examining the effectiveness of PA interventions in people with OA and comorbidity found the evidence to be limited and heterogeneous (n=14 studies, of which 10 were OA and obesity studies). Trends suggest PA interventions may improve clinical outcomes of pain and function, although uncertainty remains. Secondary data analysis of two large randomised controlled trials for older adults with knee (n=514) and joint (knee, hip, hand and foot) OA (n=525) found an association between comorbidity presence and lower PA levels. A potential dose response relationship exists between comorbidity frequency and lower PA levels, and the presence of specific comorbidity types (e.g. cardiovascular disease) were associated with decreased PA levels. Qualitative semi-structured interviews in 17 older adults with OA and comorbidity found barriers to PA were multiple and dynamic. OA was often prioritised as more important over other health conditions based on the disruption it caused to QOL. Participants reported; a lack of knowledge about how best to manage their conditions, and the role of PA; negative perceptions regarding the role of PA in managing their conditions, which appeared to impact self-efficacy for self-management of conditions and PA. Healthcare professionals and social support were found to facilitate PA. This multi-method thesis has contributed to a better understanding of PA in the context of OA and comorbidity.
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- 2021
126. Repeatability of stature measurements in individuals with and without chronic low back pain.
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Healey E, Fowler N, Burden A, and McEwan I
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- 2006
127. Book review: Speak Freely: Essential Speech Skills for School-Age Children Who Stutter. Speech
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Healey, E. Charles
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- 2008
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128. Book review
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Healey, E. Charles
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- 2007
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129. Physiology of Colour Change.
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HEALEY, E. G.
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- 1964
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130. A 10-year Experience of Pediatric Brachytherapy
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Healey, E. A., Shamberger, R. C., Grier, H. E., and Loeffler, J. S.
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- 1995
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131. Abstracts of the Second World Congress on Fluency Disorders, San Francisco, California
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Healey, E. C.
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- 1997
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132. Decision Making in the Treatment of School-Age Children Who Stutter
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Healey, E. C., Scott, L. A., and Ellis, G.
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- 1995
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133. The letters of D.H. Lawrence & Amy Lowell, 1914-1925
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Lawrence, D. H. (David Herbert), 1885-1930., Cushman, Keith., Healey, E. Claire., Lowell, Amy, 1874-1925., and Lawrence, D. H. (David Herbert), 1885-1930.
- Published
- 1985
134. Points and glossed pieces from Tell Sabi Abyad II and Tell Damishliyya I (Balikh Valley, Djezireh)
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Astruc, Laurence, Archéologies et Sciences de l'Antiquité (ArScAn), Université Paris 1 Panthéon-Sorbonne (UP1)-Université Paris 8 Vincennes-Saint-Denis (UP8)-Université Paris Nanterre (UPN)-Ministère de la Culture et de la Communication (MCC)-Institut national de recherches archéologiques préventives (Inrap)-Centre National de la Recherche Scientifique (CNRS), Institut français d'études anatoliennes - Georges Dumezil (IFEAGD), MIN AFF ETRANG-Centre National de la Recherche Scientifique (CNRS), Healey E, Campbell S, Maeda O, and Université Paris 1 Panthéon-Sorbonne (UP1)-Université Paris Nanterre (UPN)-Ministère de la Culture et de la Communication (MCC)-Centre National de la Recherche Scientifique (CNRS)
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Syria ,[SHS.ARCHEO]Humanities and Social Sciences/Archaeology and Prehistory ,neolithic ,tell Damishliyya ,archaeology ,lithic tool assemblage ,obsidian ,tell Sabi Abyad - Abstract
Actes du 4th International Workshop on Chipped Lithic Industries (Nigde, Cappadocia, Turkey) 4th-8th June 2001
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- 2011
135. Reassessing the management of uncomplicated urinary tract infection: A retrospective analysis using machine learning causal inference.
- Author
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Jones NC, Shih MC, Healey E, Zhai CW, Advani SD, Smith-McLallen A, Sontag D, and Kanjilal S
- Abstract
Background: Uncomplicated urinary tract infection (UTI) is a common indication for outpatient antimicrobial therapy. National guidelines for the management of uncomplicated UTI were published by the Infectious Diseases Society of America in 2011, however it is not fully known the extent to which they align with current practices, patient diversity, and pathogen biology, all of which have evolved significantly in the time since their publication., Objective: We aimed to re-evaluate efficacy and adverse events for first-line antibiotics (nitrofurantoin, and trimethoprim-sulfamethoxazole), versus second-line antibiotics (fluoroquinolones) and versus alternative agents (oral β-lactams) for uncomplicated UTI in contemporary clinical practice by applying machine learning algorithms to a large claims database formatted into the Observational Medical Outcomes Partnership (OMOP) common data model., Outcomes: Our primary outcome was a composite endpoint for treatment failure, defined as outpatient or inpatient re-visit within 30 days for UTI, pyelonephritis or sepsis. Secondary outcomes were the risk of 4 common antibiotic-associated adverse events: gastrointestinal symptoms, rash, kidney injury and C. difficile infection., Statistical Methods: We adjusted for covariate-dependent censoring and treatment indication using a broad set of domain-expert derived features. Sensitivity analyses were conducted using OMOP-learn, an automated feature engineering package for OMOP datasets., Results: Our study included 57,585 episodes of UTI from 49,037 patients. First-line antibiotics were prescribed in 35,018 (61%) episodes, second-line antibiotics were prescribed in 21,140 (37%) episodes and alternative antibiotics were prescribed in 1,427 (2%) episodes. After adjustment, patients receiving first-line therapies had an absolute risk difference of -2.1% [95% CI -2.9% to -1.6%] for having a revisit for UTI within 30 days of diagnosis relative to second-line antibiotics. First-line therapies had an absolute risk difference of -6.6% [95% CI -9.4% to -3.8%] for 30-day revisit compared to alternative β-lactam antibiotics. Differences in adverse events were clinically similar between first and second line agents, but lower for first-line agents relative to alternative antibiotics (-3.5% [95% CI -5.9% to -1.2%]). Results were similar for models built with OMOPlearn., Conclusion: Our study provides support for the continued use of first-line antibiotics for the management of uncomplicated UTI. Our results also provide proof-of-principle that automated feature extraction methods for OMOP formatted data can emulate manually curated models, thereby promoting reproducibility and generalizability., Competing Interests: CONFLICTS OF INTEREST SDA reports support from Centers for Disease Control and Prevention SHEPheRD 75D30121D12733-D5-E003 (grant no. 5U54CK000616–02), the Society for Healthcare Epidemiology of America, and the Duke Claude D. Pepper Older Americans Independence Center (National Institute on Aging grant no. P30AG028716), as well as consulting fees from Locus Biosciences, Sysmex America, GlaxoSmithKline, bioMérieux, and the Infectious Diseases Society of America. SDA became an employee of GSK/ViiV Healthcare one year after her contribution to this project.
- Published
- 2024
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136. Adenomas from individuals with pathogenic biallelic variants in the MUTYH and NTHL1 genes demonstrate base excision repair tumour mutational signature profiles similar to colorectal cancers, expanding potential diagnostic and variant classification applications.
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Walker R, Joo JE, Mahmood K, Clendenning M, Como J, Preston SG, Joseland S, Pope BJ, Medeiros ABD, Murillo BV, Pachter N, Sweet K, Spigelman AD, Groves A, Gleeson M, Bernatowicz K, Poplawski N, Andrews L, Healey E, Gallinger S, Grant RC, Win AK, Hopper JL, Jenkins MA, Torrezan GT, Rosty C, Macrae FA, Winship IM, Buchanan DD, and Georgeson P
- Abstract
Background: Colorectal cancers (CRCs) from people with biallelic germline likely pathogenic/pathogenic variants in MUTYH or NTHL1 exhibit specific single base substitution (SBS) mutational signatures, namely combined SBS18 and SBS36 (SBS18+SBS36), and SBS30, respectively. The aim was to determine if adenomas from biallelic cases demonstrated these mutational signatures at diagnostic levels., Methods: Whole-exome sequencing of FFPE tissue and matched blood-derived DNA was performed on 9 adenomas and 15 CRCs from 13 biallelic MUTYH cases, on 7 adenomas and 2 CRCs from 5 biallelic NTHL1 cases and on 27 adenomas and 26 CRCs from 46 non-hereditary (sporadic) participants. All samples were assessed for COSMIC v3.2 SBS mutational signatures., Results: In biallelic MUTYH cases, SBS18+SBS36 signature proportions in adenomas (mean±standard deviation, 65.6%±29.6%) were not significantly different to those observed in CRCs (76.2%±20.5%, p-value =0.37), but were significantly higher compared with non-hereditary adenomas (7.6%±7.0%, p-value =3.4×10
-4 ). Similarly, in biallelic NTHL1 cases, SBS30 signature proportions in adenomas (74.5%±9.4%) were similar to those in CRCs (78.8%±2.4%) but significantly higher compared with non-hereditary adenomas (2.8%±3.6%, p-value =5.1×10-7 ). Additionally, a compound heterozygote with the c.1187G>A p.(Gly396Asp) pathogenic variant and the c.533G>C p.(Gly178Ala) variant of unknown significance (VUS) in MUTYH demonstrated high levels of SBS18+SBS36 in four adenomas and one CRC, providing evidence for reclassification of the VUS to pathogenic., Conclusions: SBS18+SBS36 and SBS30 were enriched in adenomas at comparable proportions observed in CRCs from biallelic MUTYH and biallelic NTHL1 cases, respectively. Therefore, testing adenomas may improve the identification of biallelic cases and facilitate variant classification, ultimately enabling opportunities for CRC prevention., Competing Interests: Robert C. Grant received a scholarship from Pfizer and provided consulting or advisory roles for Astrazeneca, Tempus, Eisai, Incyte, Knight Therapeutics, Guardant Health, and Ipsen. All other authors have no relevant financial or non-financial interests to disclose.- Published
- 2024
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137. Breathwork-induced psychedelic experiences modulate neural dynamics.
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Lewis-Healey E, Tagliazucchi E, Canales-Johnson A, and Bekinschtein TA
- Subjects
- Humans, Male, Female, Young Adult, Adult, Respiration drug effects, Hallucinogens pharmacology, Electroencephalography, Consciousness drug effects, Consciousness physiology, Brain physiology, Brain drug effects
- Abstract
Breathwork is an understudied school of practices involving intentional respiratory modulation to induce an altered state of consciousness (ASC). We simultaneously investigate the phenomenological and neural dynamics of breathwork by combining Temporal Experience Tracing, a quantitative methodology that preserves the temporal dynamics of subjective experience, with low-density portable EEG devices. Fourteen novice participants completed a course of up to 28 breathwork sessions-of 20, 40, or 60 min-in 28 days, yielding a neurophenomenological dataset of 301 breathwork sessions. Using hypothesis-driven and data-driven approaches, we found that "psychedelic-like" subjective experiences were associated with increased neural Lempel-Ziv complexity during breathwork. Exploratory analyses showed that the aperiodic exponent of the power spectral density-but not oscillatory alpha power-yielded similar neurophenomenological associations. Non-linear neural features, like complexity and the aperiodic exponent, neurally map both a multidimensional data-driven composite of positive experiences, and hypothesis-driven aspects of psychedelic-like experience states such as high bliss., (© The Author(s) 2024. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)
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- 2024
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138. Tracking rivalry with neural rhythms: multivariate SSVEPs reveal perception during binocular rivalry.
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Laukkonen RE, Lewis-Healey E, Ghigliotti L, Daneshtalab N, Lageman J, and Slagter HA
- Abstract
The contents of awareness can substantially change without any modification to the external world. Such effects are exemplified in binocular rivalry, where a different stimulus is presented to each eye causing instability in perception. This phenomenon has made binocular rivalry a quintessential method for studying consciousness and the necessary neural correlates for awareness. However, to conduct research on binocular rivalry usually requires self-reports of changes in percept, which can produce confounds and exclude states and contexts where self-reports are undesirable or unreliable. Here, we use a novel multivariate spatial filter dubbed 'Rhythmic Entrainment Source Separation' to extract steady state visual evoked potentials from electroencephalography data. We show that this method can be used to quantify the perceptual switch-rate of participants during binocular rivalry and therefore may be valuable in experimental contexts where self-reports are methodologically problematic or impossible, particularly as an adjunct. Our analyses also reveal that 'no-report' conditions may affect the deployment of attention and thereby neural correlates, another important consideration for consciousness research., Competing Interests: None declared., (© The Author(s) 2024. Published by Oxford University Press.)
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- 2024
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139. Medical Artificial Intelligence and Human Values.
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Yu KH, Healey E, Leong TY, Kohane IS, and Manrai AK
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- Humans, Language, Risk, Clinical Reasoning, Bias, Artificial Intelligence ethics, Artificial Intelligence standards, Social Values, Clinical Decision-Making ethics
- Published
- 2024
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140. Leveraging Large Language Models to Analyze Continuous Glucose Monitoring Data: A Case Study.
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Healey E, Tan A, Flint K, Ruiz J, and Kohane I
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Continuous glucose monitors (CGM) provide patients and clinicians with valuable insights about glycemic control that aid in diabetes management. The advent of large language models (LLMs), such as GPT-4, has enabled real-time text generation and summarization of medical data. Further, recent advancements have enabled the integration of data analysis features in chatbots, such that raw data can be uploaded and analyzed when prompted. Studying both the accuracy and suitability of LLM-derived data analysis performed on medical time series data, such as CGM data, is an important area of research. The objective of this study was to assess the strengths and limitations of using an LLM to analyze raw CGM data and produce summaries of 14 days of data for patients with type 1 diabetes. This study used simulated CGM data from 10 different cases. We first evaluated the ability of GPT-4 to compute quantitative metrics specific to diabetes found in an Ambulatory Glucose Profile (AGP). Then, using two independent clinician graders, we evaluated the accuracy, completeness, safety, and suitability of qualitative descriptions produced by GPT-4 across five different CGM analysis tasks. We demonstrated that GPT-4 performs well across measures of accuracy, completeness, and safety when producing summaries of CGM data across all tasks. These results highlight the capabilities of using an LLM to produce accurate and safe narrative summaries of medical time series data. We highlight several limitations of the work, including concerns related to how GPT-4 may misprioritize highlighting instances of hypoglycemia and hyperglycemia. Our work serves as a preliminary study on how generative language models can be integrated into diabetes care through CGM analysis, and more broadly, the potential to leverage LLMs for streamlined medical time series analysis., Competing Interests: E.H. is supported by the National Science Foundation Graduate Research Fellowship Program. J.R. is a Fellow in the Pediatric Scientist Development Program supported by the Cystic Fibrosis Foundation. All other authors report no conflicts of interests.
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- 2024
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141. Evaluating Osteoarthritis Management Programs: outcome domain recommendations from the OARSI Joint Effort Initiative.
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Allen KD, Huffman K, Cleveland RJ, van der Esch M, Abbott JH, Abbott A, Bennell K, Bowden JL, Eyles J, Healey EL, Holden MA, Jayakumar P, Koenig K, Lo G, Losina E, Miller K, Østerås N, Pratt C, Quicke JG, Sharma S, Skou ST, Tveter AT, Woolf A, Yu SP, and Hinman RS
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- Humans, Consensus, Health Personnel, Surveys and Questionnaires, Delphi Technique, Osteoarthritis, Knee therapy, Osteoarthritis, Hip therapy
- Abstract
Objective: To develop sets of core and optional recommended domains for describing and evaluating Osteoarthritis Management Programs (OAMPs), with a focus on hip and knee Osteoarthritis (OA)., Design: We conducted a 3-round modified Delphi survey involving an international group of researchers, health professionals, health administrators and people with OA. In Round 1, participants ranked the importance of 75 outcome and descriptive domains in five categories: patient impacts, implementation outcomes, and characteristics of the OAMP and its participants and clinicians. Domains ranked as "important" or "essential" by ≥80% of participants were retained, and participants could suggest additional domains. In Round 2, participants rated their level of agreement that each domain was essential for evaluating OAMPs: 0 = strongly disagree to 10 = strongly agree. A domain was retained if ≥80% rated it ≥6. In Round 3, participants rated remaining domains using same scale as in Round 2; a domain was recommended as "core" if ≥80% of participants rated it ≥9 and as "optional" if ≥80% rated it ≥7., Results: A total of 178 individuals from 26 countries participated; 85 completed all survey rounds. Only one domain, "ability to participate in daily activities", met criteria for a core domain; 25 domains met criteria for an optional recommendation: 8 Patient Impacts, 5 Implementation Outcomes, 5 Participant Characteristics, 3 OAMP Characteristics and 4 Clinician Characteristics., Conclusion: The ability of patients with OA to participate in daily activities should be evaluated in all OAMPs. Teams evaluating OAMPs should consider including domains from the optional recommended set, with representation from all five categories and based on stakeholder priorities in their local context., (Published by Elsevier Ltd.)
- Published
- 2023
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142. Contribution of large genomic rearrangements in PALB2 to familial breast cancer: implications for genetic testing.
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Li N, Zethoven M, McInerny S, Healey E, DeSilva D, Devereux L, Scott RJ, James PA, and Campbell IG
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- Humans, Female, Fanconi Anemia Complementation Group N Protein genetics, Genes, BRCA1, Genes, BRCA2, Australia epidemiology, Genetic Testing, BRCA1 Protein genetics, BRCA2 Protein genetics, Genomics, Genetic Predisposition to Disease, Germ-Line Mutation, Breast Neoplasms diagnosis, Breast Neoplasms genetics, Ovarian Neoplasms genetics
- Abstract
Background: PALB2 is the most important contributor to familial breast cancer after BRCA1 and BRCA2 . Large genomic rearrangements (LGRs) in BRCA1 and BRCA2 are routinely assessed in clinical testing and are a significant contributor to the yield of actionable findings. In contrast, the contribution of LGRs in PALB2 has not been systematically studied., Methods: We performed targeted sequencing and real-time qPCR validation to identify LGRs in PALB2 in 5770 unrelated patients with familial breast cancer and 5741 cancer-free control women from the same Australian population., Results: Seven large deletions ranging in size from 0.96 kbp to 18.07 kbp involving PALB2 were identified in seven cases, while no LGRs were identified in any of the controls. Six LGRs were considered pathogenic as they included one or more exons of PALB2 and disrupted the WD40 domain at the C terminal end of the PALB2 protein while one LGR only involved a partial region of intron 10 and was considered a variant of unknown significance. Altogether, pathogenic LGRs identified in this study accounted for 10.3% (6 of 58) of the pathogenic PALB2 variants detected among the 5770 families with familial breast cancer., Conclusions: Our data show that a clinically important proportion of PALB2 pathogenic mutations in Australian patients with familial breast cancer are LGRs. Such observations have provided strong support for inclusion of PALB2 LGRs in routine clinical genetic testing., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2023. No commercial re-use. See rights and permissions. Published by BMJ.)
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- 2023
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143. A Pilot Study Examining the Experience of Veterinary Telehealth in an Underserved Population Through a University Program Integrating Veterinary Students.
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Lundahl L, Powell L, Reinhard CL, Healey E, and Watson B
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Cost and transportation are two commonly cited barriers to accessing health care in both human and veterinary medicine within underserved communities. While human medicine has utilized telehealth as a means of breaking down this barrier, limited research exists to describe its use in veterinary medicine. The Pets for Life (PFL) program has partnered with the Penn Vet Shelter Medicine Program to provide veterinary appointments to clients, at no cost to the client, in underserved zip codes through virtual telehealth visits. These visits incorporated veterinary students as part of their clinical rotations through a service learning based model. Between January and August 2021, 31 PFL clients and nine veterinary students completed surveys to describe the role of telehealth in addressing barriers to accessing veterinary care, their perceptions of telehealth appointments, the human-animal bond, and changes in veterinary student empathy. PFL clients completed the survey immediately following their telehealth appointment, and veterinary students completed surveys prior to and following their participation in the PFL appointments during the rotation. Nearly 25% of clients reported that they would not have been able to secure transportation and 58% reported they would not have been able to afford an appointment at an in-person veterinary clinic. The population of clients who responded that cost was a significant barrier to accessing care did not entirely overlap with those who responded that transportation was a significant barrier to accessing care, indicating support for the use of telehealth in providing an alternative modality to address transportation challenges as a barrier to accessing veterinary care. Additional data suggests that both client and student experience was overwhelmingly positive, providing support for further service learning initiatives in veterinary student education. Further research is warranted to continue to assess the emerging role of telehealth in improving veterinary care for underserved communities., Competing Interests: EH was employed by Philadelphia Animal Welfare Society. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2022 Lundahl, Powell, Reinhard, Healey and Watson.)
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- 2022
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144. Resistance or appropriation?: Uptake of exercise after a nurse-led intervention to promote self-management for osteoarthritis.
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Morden A, Ong BN, Jinks C, Healey E, Finney A, and Dziedzic KS
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- Exercise, Humans, Nurse's Role, Qualitative Research, Osteoarthritis therapy, Self-Management
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The philosophical underpinning of trials of complex interventions is critiqued for not taking into account causal mechanisms that influence potential outcomes. In this article, we draw from in-depth interviews (with practice nurses and patients) and observations of practice meetings and consultations to investigate the outcomes of a complex intervention to promote self-management (in particular exercise) for osteoarthritis in primary care settings. We argue that nurses interpreted the intervention as underpinned by the need to educate rather than work with patients, and, drawing from Habermasian theory, we argue that expert medicalised knowledge (system) clashed with lay 'lifeworld' prerogatives in an uneven communicative arena (the consultation). In turn, the advice and instructions given to patients were not always commensurate with their 'lifeworld'. Consequently, patients struggled to embed exercise routines into their daily lives for reasons of unsuitable locality, sense-making that 'home' was an inappropriate place to exercise and using embodied knowledge to test the efficacy of exercise on pain. We conclude by arguing that using Habermasian theory helped to understand reasons why the trial failed to increase exercise levels. Our findings suggest that communication styles influence the outcomes of self-management interventions, reinforce the utility of theoretically informed qualitative research embedded within trials to improve conduct and outcomes and indicate incorporating perspectives from human geography can enhance Habermas-informed research and theorising.
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- 2022
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145. Comparison of reliability, construct validity and responsiveness of the IPAQ-SF and PASE in adults with osteoarthritis.
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Smith RD, McHugh GA, Quicke JG, Dziedzic KS, and Healey EL
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- Adult, Aged, Humans, Randomized Controlled Trials as Topic, Reproducibility of Results, Surveys and Questionnaires, Exercise physiology, Osteoarthritis
- Abstract
Background: This study assessed the measurement properties of two commonly used self-report physical activity (PA) measures: the International Physical Activity Questionnaire-Short Form (IPAQ-SF) and the Physical Activity Scale for the elderly (PASE) in adults with osteoarthritis., Methods: Secondary analysis of the MOSAICS cluster randomised controlled trial baseline and 3-month follow-up questionnaires, total scores and subdomains of the IPAQ-SF and PASE were compared. Intra-class correlations (ICC) were used to assess test-retest reliability, measurement error was assessed using standard error of measurement (SEM), smallest detectable change (SDC) and 95% limits of agreement (LoA). Responsiveness was assessed using effect size (ES), standard responsive measurement (SRM) and response ratio (RR)., Results: There was moderate correlation (r = 0.56) between the total IPAQ-SF scores (score ranges 0-16,398) and the total PASE scores (score ranges 0-400). Subdomain correlations were also moderate (ranges 0.39-0.57). The PASE showed greater reliability compared to the IPAQ-SF (ICC = 0.68; 0.61-0.74 95% CI and ICC = 0.64; 0.55-0.72, respectively). Measurement errors in both measures were large: PASE SEM = 46.7, SDC = 129.6 and 95% LoA ranges = -117 to 136, the IPAQ-SF SEM = 3532.2 METS
-1 min-1 week , SDC = 9790.8 and 95% LoA ranges = -5222 to 5597. Responsiveness was poor: ES -0.14 and -0.16, SRM -0.21 and -0.21, and RR 0.12 and 0.09 for the IPAQ-SF and PASE, respectively., Discussion: The IPAQ-SF and PASE appear limited in reliability, measurement error and responsiveness. Researchers and clinicians should be aware of these limitations, particularly when comparing different levels of PA and monitoring PA levels changes over time in those with osteoarthritis., (© 2021 John Wiley & Sons Ltd.)- Published
- 2021
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146. Smoke on the Water: Comparative Assessment of Combined Thermal Shock Treatments for Control of Invasive Asian Clam, Corbicula fluminea.
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Coughlan NE, Cuthbert RN, Cunningham EM, Potts S, McSweeney D, Vong GYW, Healey E, Crane K, Caffrey JM, Lucy FE, Davis E, and Dick JTA
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- Animals, Ecosystem, Introduced Species, Smoke, Water, Corbicula, Water Pollutants, Chemical
- Abstract
Suppression of established populations of invasive alien species can be a complex and expensive process, which is frequently unsuccessful. The Asian clam, Corbicula fluminea (Müller, 1774), is considered a high impact invader that can adversely alter freshwater ecosystems and decrease their socioeconomic value. To date, C. fluminea continues to spread and persist within freshwater environments worldwide, despite repeated management attempts to prevent dispersal and suppress established populations. As extensive C. fluminea beds can often become exposed during low-water conditions, the direct application of hot or cold thermal shock treatments has been proposed as suitable mechanism for their control. Further, mechanical substrate disturbance may enhance the efficacy of thermal shock treatments by facilitating exposures to multiple layers of buried clams. In the present study, we advanced these methods by assessing combined applications of both hot and cold thermal shock treatments for control of C. fluminea, using steam spray (≥100 °C; 350 kPa), low- or high-intensity open-flame burns (~1000 °C) and dry ice (-78 °C). In a direct comparison of raking combined with hot thermal shock applications, both steam and high-intensity open-flame treatments tended to be most effective, especially following multiple applications. In addition, when hot thermal treatments are followed by a final cold shock (i.e. dry ice), steam treatments tended to be most effective. Further, when dry ice was applied either alone or prior to an application of a hot shock treatment, substantial if not complete C. fluminea mortality was observed. Overall, this study demonstrated that combined applications of hot and cold thermal shock treatments, applied following the disruption of the substrate, can substantially increase C. fluminea mortality compared to separate hot or cold treatments.
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- 2021
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147. Moderators of the effects of therapeutic exercise for people with knee and hip osteoarthritis: A systematic review of sub-group analyses from randomised controlled trials.
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Quicke JG, Runhaar J, van der Windt DA, Healey EL, Foster NE, and Holden MA
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Objective: 1) To identify potential moderators of the effect of therapeutic exercise explored in randomised controlled trials (RCTs) of knee and hip osteoarthritis (OA); 2) summarise the extent, strength and quality of evidence reported for moderators., Design: Systematic review (PROSPERO CRD42019148074). Inclusion criteria: a) RCTs with sub-group analyses investigating potential moderator variables; b) participants with knee and/or hip OA; c) therapeutic exercise interventions compared to either no exercise control or alternative exercise intervention(s), and; d) measuring pain or physical function outcomes. Included RCTs' risk of bias and sub-group analysis quality were assessed. Data were extracted on sub-group analyses (methods and potential moderators), outcomes (pain and function) and sub-group findings (associated statistics of potential moderator∗intervention effects). Findings were analysed using narrative synthesis., Results: 14 RCTs were included; 13 knee OA RCTs (n = 2743 participants) explored 23 potential moderators and 1 hip OA RCT (n = 203) explored 6 potential moderators. Sub-group analysis quality was mixed. Knee varus malalignment was the only moderator of therapeutic exercise compared to non-exercise control in 1 RCT (WOMAC-pain adjusted difference 12.7 in the neutral alignment sub-group and 1.8 in the malaligned sub-group, interaction term: p = 0.02). Varus thrust, knee laxity/instability, obesity and cardiac problems all moderated the effect of therapeutic exercise on pain or function compared to different comparison exercise., Conclusions: Therapeutic exercise may be effective for reducing pain in people with knee OA and neutral alignment but not for those with varus malalignment. The exercise moderator literature is limited. More robust evidence is required to inform sub-group exercise selection., Competing Interests: There is no conflict of interest for any of the authors., (© 2020 The Authors.)
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- 2020
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148. Embedded Model Predictive Control for a Wearable Artificial Pancreas.
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Chakrabarty A, Healey E, Shi D, Zavitsanou S, Doyle FJ 3rd, and Dassau E
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While artificial pancreas (AP) systems are expected to improve the quality of life among people with type 1 diabetes mellitus (T1DM), the design of convenient systems that optimize the user experience, especially for those with active lifestyles, such as children and adolescents, still remains an open research question. In this work, we introduce an embeddable design and implementation of model predictive control (MPC) of AP systems for people with T1DM that significantly reduces the weight and on-body footprint of the AP system. The embeddable controller is based on a zone MPC that has been evaluated in multiple clinical studies. The proposed embedded zone MPC features a simpler design of the periodic safe zone in the cost function and the utilization of state-of-the-art alternating minimization algorithms for solving the convex programming problems inherent to MPC with linear models subject to convex constraints. Off-line closed-loop data generated by the FDA-accepted UVA/Padova simulator is used to select an optimization algorithm and corresponding tuning parameters. Through hardware-in-the-loop in silico results on a limited-resource Arduino Zero (Feather M0) platform, we demonstrate the potential of the proposed embedded MPC. In spite of resource limitations, our embedded zone MPC manages to achieve comparable performance of that of the full-version zone MPC implemented in a 64-bit desktop for scenarios with/without meal-disturbance compensations. Metrics for performance comparison included median percent time in the euglycemic ([70, 180] mg/dL range) of 84.3% vs. 83.1% for announced meals, with an equivalence test yielding p = 0.0013 and 66.2% vs. 66.0% for unannounced meals with p = 0.0028.
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- 2020
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149. Aligning intuition and theory: enhancing the replicability of behaviour change interventions in cancer genetics.
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Taylor N, Healey E, Morrow A, Greening S, Wakefield CE, Warwick L, Williams R, and Tucker KM
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Background: Despite considerable encouragement for healthcare professionals to use or be clear about the theory used in their improvement programmes, the uptake of these approaches to design interventions or report their content is lacking. Recommendations suggest healthcare practitioners work with social and/or behavioural scientists to gain expertise in programme theory, ideally before, but even during or after the work is done. We aim to demonstrate the extent to which intuitive intervention strategies designed by healthcare professionals to overcome patient barriers to communicating genetic cancer risk information to family members align with a theoretical framework of behaviour change., Methods: As part of a pre-post intervention study, a team of genetic counsellors aimed to understand, and design interventions to overcome, the major barriers a group of familial cancer patients face around communicating hereditary cancer risk information to their relatives. A behavioural change specialist worked with the team to review and recode barriers and interventions according to the Theoretical Domains Framework (TDF) and 93 behaviour change techniques (BCTs). Resulting BCTs were cross-referenced against the Theory and Techniques Tool to examine whether evidence-based mechanistic links have been established to date., Results: Five themes emerged from the genetic counsellor coded barriers, which when recoded according to the TDF represented seven domains of behaviour change. Forty-five experiential and intuitive interventions were used to tackle key barriers. These were represented by 21 BCTs, which were found to be used on 131 occasions. The full mapping exercise is presented, resulting in a suite of intervention strategies explicitly linked to a theoretical framework. Structured, written reflections were provided retrospectively by the core clinical team., Conclusions: Although the ideal is to use theory prospectively, or even whilst a project is underway, making links between theory and interventions explicit, even retrospectively, can contribute towards standardising intervention strategies, furthering understanding of intervention effects, and enhancing the opportunities for accurate replicability and generalisability across other settings. Demonstrating to healthcare professionals how their intuition aligns with theory may highlight the additional benefits that theory has to offer and serve to promote its use in improvement., Competing Interests: Competing interestsThe authors declare that they have no competing interests., (© The Author(s) 2020.)
- Published
- 2020
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150. Steam and Flame Applications as Novel Methods of Population Control for Invasive Asian Clam (Corbicula fluminea) and Zebra Mussel (Dreissena polymorpha).
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Coughlan NE, Cunningham EM, Potts S, McSweeney D, Healey E, Dick JTA, Vong GYW, Crane K, Caffrey JM, Lucy FE, Davis E, and Cuthbert RN
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- Animals, Ecosystem, Population Control, Steam, Corbicula, Dreissena, Water Pollutants, Chemical
- Abstract
Control strategies for established populations of invasive alien species can be costly and complex endeavours, which are frequently unsuccessful. Therefore, rapid-reaction techniques that are capable of maximising efficacy whilst minimising environmental damage are urgently required. The Asian clam (Corbicula fluminea Müller, 1774), and the zebra mussel (Dreissena polymorpha Pallas, 1771), are invaders capable of adversely affecting the functioning and biodiversity of freshwater ecosystems. Despite efforts to implement substantial population-control measures, both species continue to spread and persist within freshwater environments. As bivalve beds often become exposed during low-water conditions, this study examined the efficacy of steam-spray (≥100 °C, 350 kPa) and open-flame burn treatments (~1000 °C) to kill exposed individuals. Direct steam exposure lasting for 5 min caused 100% mortality of C. fluminea buried at a depth of 3 cm. Further, combined rake and thermal shock treatments, whereby the substrate is disturbed between each application of either a steam or open flame, caused 100% mortality of C. fluminea specimens residing within a 4-cm deep substrate patch, following three consecutive treatment applications. However, deeper 8-cm patches and water-saturated substrate reduced maximum bivalve species mortality rates to 77% and 70%, respectively. Finally, 100% of D. polymorpha specimens were killed following exposure to steam and open-flame treatments lasting for 30 s and 5 s, respectively. Overall, our results confirm the efficacy of thermal shock treatments as a potential tool for substantial control of low-water-exposed bivalves. Although promising, our results require validation through upscaling to field application, with consideration of other substrate types, increased substrate depth, greater bivalve densities, non-target and long-term treatment effects.
- Published
- 2020
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