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Your search keyword '"Van Der Walt A."' showing total 258 results
Start Over Author "Van Der Walt A." Publisher elsevier b.v.
258 results on '"Van Der Walt A."'

7. Neutropaenia complications from Ocrelizumab and Rituximab treatment

Author

Pang, Venus, Seery, Nabil, Wesselingh, Robb, Yeh, Wei, Zhong, Michael, Tan, Tracie, Dwyer, Chris, Nesbitt, Cassie, Rath, Louise, Perera, Deborah, Bridge, Francesca, Skibina, Olga, Bosco, Julian J., Jokubaitis, Vilija, Marriott, Mark, Butzkueven, Helmut, Van Der Walt, Anneke, Massey, Jennifer, Sutton, Ian, and Monif, Mastura

Published
2024
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8. The role of wastewater-based epidemiology for SARS-CoV-2 in developing countries: Cumulative evidence from South Africa supports sentinel site surveillance to guide public health decision-making

Author

Iwu-Jaja, Chinwe, Ndlovu, Nkosenhle Lindo, Rachida, Said, Yousif, Mukhlid, Taukobong, Setshaba, Macheke, Mokgaetji, Mhlanga, Laurette, van Schalkwyk, Cari, Pulliam, Juliet R.C., Moultrie, Tom, le Roux, Wouter, Schaefer, Lisa, Pocock, Gina, Coetzee, Leanne Z., Mans, Janet, Bux, Faizal, Pillay, Leanne, de Villiers, Dariah, du Toit, A.P., Jambo, Don, Gomba, Annancietar, Groenink, Shaun, Madgewick, Neil, van der Walt, Martie, Mutshembele, Awelani, Berkowitz, Natascha, Suchard, Melinda, and McCarthy, Kerrigan

Published
2023
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15. Switching to natalizumab or fingolimod in multiple sclerosis: Comparative effectiveness and effect of pre-switch disease activity

Author

Spelman, Tim, Horakova, Dana, Ozakbas, Serkan, Alroughani, Raed, Onofrj, Marco, Kalincik, Tomas, Prat, Alexandre, Terzi, Murat, Grammond, Pierre, Patti, Francesco, Csepany, Tunde, Boz, Cavit, Lechner-Scott, Jeannette, Granella, Franco, Grand'Maison, Francois, van der Walt, Anneke, Zhu, Chao, and Butzkueven, Helmut

Published
2023
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22. Incidence of pregnancy and disease-modifying therapy exposure trends in women with multiple sclerosis: A contemporary cohort study

Author

Nguyen, Ai-Lan, Havrdova, Eva Kubala, Horakova, Dana, Izquierdo, Guillermo, Kalincik, Tomas, van der Walt, Anneke, Terzi, Murat, Alroughani, Raed, Duquette, Pierre, Girard, Marc, Prat, Alexandre, Boz, Cavit, Sola, Patrizia, Ferraro, Diana, Lugaresi, Alessandra, Lechner-Scott, Jeannette, Barnett, Michael, Grand'Maison, Francois, Grammond, Pierre, Ramo-Tello, Cristina, Turkoglu, Recai, McCombe, Pamela, Pucci, Eugenio, Trojano, Maria, Granella, Franco, Spitaleri, Daniele, Van Pesch, Vincent, Soysal, Aysun, Oreja-Guevara, Celia, Verheul, Freek, Vucic, Steve, Hodgkinson, Suzanne, Slee, Mark, Ampapa, Radek, Prevost, Julie, Menoyo, Jose Luis Sanchez, Skibina, Olga, Solaro, Claudio, Olascoaga, Javier, Shaw, Cameron, Madsen, Klaus Gregaard, Naidoo, Kerisha, Hyde, Robert, Butzkueven, Helmut, and Jokubaitis, Vilija

Published
2019
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25. Predicting arrhythmic event score in Brugada syndrome: Worldwide pooled analysis with internal and external validation.

Author

Rattanawong, Pattara, Mattanapojanat, Natthinee, Mead-Harvey, Carolyn, Van Der Walt, Charles, Kewcharoen, Jakrin, Kanitsoraphan, Chanavuth, Vutthikraivit, Wasawat, Prasitlumkum, Narut, Putthapiban, Prapaipan, Chintanavilas, Kumpol, Sahasthas, Dujdao, Ngarmukos, Tachapong, Thakkinstian, Ammarin, Sorajja, Dan, Makarawate, Pattarapong, and Shen, Win-Kuang

Abstract

Brugada syndrome is an inherited arrhythmic disease associated with major arrhythmic events (MAE). Risk predictive scores were previously developed with various performances. The purpose of this study was to create a novel score—Predicting Arrhythmic evenT (PAT)—with internal and external validation. A systematic review was performed to identify risk factors for MAE. The odds ratios (ORs) of each factor were pooled across studies. The PAT scoring scheme was developed based on pooled ORs. The PAT score was internally validated with published 105 Asian patients (follow-up 8.0 ± 4.1 [SD] years) and externally validated with unpublished 164 multiracial patients (82.3% White, 14.6% Asian, 3.2% Black; mean follow-up 8.0 ± 6.9 years) with Brugada syndrome. Performances were assessed and compared with previous scores using receiver operating characteristic curve (ROC) analysis. Sixty-seven studies published between 2002 and 2022 from 26 countries (7358 patients) were included. Pooled ORs were estimated, indicating that 15 of 23 risk factors were significant. The PAT score was then developed accordingly. The PAT score had significantly better discrimination (ROC 0.9671) than the BRUGADA-RISK score (ROC 0.7210; P =.006), Shanghai Score System (ROC 0.7079; P =.003), and Sieira et al score (ROC 0.8174; P =.026) in an external validation cohort. PAT score ≥ 10 predicted the first MAE with 95.5% sensitivity and 89.1% specificity (ROC 0.9460) and the recurrent MAE (ROC 0.7061) with 15.4% sensitivity and 93.3% specificity. The PAT score was shown to be useful in predicting MAE for primary prevention in patients with Brugada syndrome. [Display omitted] [ABSTRACT FROM AUTHOR]

Published
2023
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31. Severity of COVID19 infection among patients with multiple sclerosis treated with interferon-β

Author

Simpson-Yap, Steve, Pirmani, Ashkan, De Brouwer, Edward, Peeters, Liesbet M., Geys, Lotte, Parciak, Tina, Helme, Anne, Hillert, Jan, Moreau, Yves, Edan, Gilles, Spelman, Tim, Sharmin, Sifat, McBurney, Robert, Schmidt, Hollie, Bergmann, Arnfin, Braune, Stefan, Stahmann, Alexander, Middleton, Rodden, Salter, Amber, Bebo, Bruce, van der Walt, Anneke, Butzkueven, Helmut, Ozakbas, Serkan, Karabudak, Rana, Boz, Cavit, Alroughani, Raed, Rojas, Juan I, van der Mei, Ingrid, Sciascia do Olival, Guilherme, Magyari, Melinda, Alonso, Ricardo, Nicholas, Richard, Chertcoff, Anibal, Zabalza, Ana, Arrambide, Georgina, Nag, Nupur, Descamps, Annabel, Costers, Lars, Dobson, Ruth, Miller, Aleisha, Rodrigues, Paulo, Prčkovska, Vesna, Comi, Giancarlo, and Kalincik, Tomas

Published
2022
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38. Indoor temperature and CO[formula omitted] in South African primary school classrooms: Inspecting brick, container, and prefab structures.

Author

van der Walt, R.E., Grobbelaar, S.S., and Booysen, M.J.

Subjects
*INDOOR air quality, *SCHOOL day, *THERMAL insulation, *AIR conditioning, *CARBON dioxide, *BRICKS
Abstract

In the resource-constrained education sector in South Africa, infrastructure deemed temporary or backup elsewhere is used as permanent classrooms, mainly in areas of low income. Temperature and CO 2 levels, substantial determinants of air quality, have not been studied across different classroom types, despite their direct impact on children's cognitive performance and comfort. We measure CO 2 and temperature every 11 min in 24 classrooms at two schools in Stellenbosch, South Africa. Container classrooms with and without insulation, mobile (prefabricated) classrooms, and brick classrooms of different configurations are included. Measurements were concurrently sampled over twelve months, across multiple seasons with relevant metadata, including ambient weather conditions. We analyse temperature and CO 2 concentrations for classroom types and classroom categories and compare school days with non-school days. The results show that temporary classrooms (container and mobile) have substantially worse thermal environments, even when air conditioning is available. The CO 2 concentrations in container classrooms are substantially worse, whereas mobile classrooms have better conditions comparable to brick classrooms. We conclude that container classrooms have the worst temperatures and ventilation, prefabricated classrooms have acceptable ventilation but poor thermal qualities, and brick classrooms have the best thermal environment and ventilation. [ABSTRACT FROM AUTHOR]

Published
2024
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44. Calibration of cameras of the H.E.S.S. detector

Author

Aharonian, F., Akhperjanian, A.G., Aye, K.-M., Bazer-Bachi, A.R., Beilicke, M., Benbow, W., Berge, D., Berghaus, P., Bernlöhr, K., Bolz, O., Boisson, C., Borgmeier, C., Breitling, F., Brown, A.M., Chadwick, P.M., Chitnis, V.R., Chounet, L.-M., Cornils, R., Costamante, L., Degrange, B., de Jager, O.C., Djannati-Ataï, A., Drury, L.O’C., Ergin, T., Espigat, P., Feinstein, F., Fleury, P., Fontaine, G., Funk, S., Gallant, Y.A., Giebels, B., Gillessen, S., Goret, P., Guy, J., Hadjichristidis, C., Hauser, M., Heinzelmann, G., Henri, G., Hermann, G., Hinton, J., Hofmann, W., Holleran, M., Horns, D., Jung, I., Khélifi, B., Komin, Nu., Konopelko, A., Latham, I.J., Gallou, R. Le, Lemoine, M., Lemière, A., Leroy, N., Lohse, T., Marcowith, A., Masterson, C., McComb, T.J.L., de Naurois, M., Nolan, S.J., Noutsos, A., Orford, K.J., Osborne, J.L., Ouchrif, M., Panter, M., Pelletier, G., Pita, S., Pohl, M., Pühlhofer, G., Punch, M., Raubenheimer, B.C., Raue, M., Raux, J., Rayner, S.M., Redondo, I., Reimer, A., Reimer, O., Ripken, J., Rivoal, M., Rob, L., Rolland, L., Rowell, G., Sahakian, V., Sauge, L., Schlenker, S., Schlickeiser, R., Schuster, C., Schwanke, U., Siewert, M., Sol, H., Steenkamp, R., Stegmann, C., Tavernet, J.-P., Théoret, C.G., Tluczykont, M., van der Walt, D.J., Vasileiadis, G., Vincent, P., Visser, B., Volk, H.J., and Wagner, S.J.

Published
2004
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