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160 results on '"Masse, Benoit"'

2. Perinatal morbidity among women with a previous caesarean delivery (PRISMA trial): a cluster-randomised trial

Author

Chaillet, Nils, Mâsse, Benoît, Grobman, William A, Shorten, Allison, Gauthier, Robert, Rozenberg, Patrick, Dugas, Marylène, Pasquier, Jean-Charles, Audibert, François, Abenhaim, Haim A, Demers, Suzanne, Piedboeuf, Bruno, Fraser, William D, Gagnon, Robert, Gagné, Guy-Paul, Francoeur, Diane, Girard, Isabelle, Duperron, Louise, Bédard, Marie-Josée, Johri, Mira, Dubé, Eric, Blouin, Simon, Ducruet, Thierry, Girard, Mario, Bujold, Emmanuel, Roy, Chantal, Mailhot, Josée, Samson, Anne, Bordeleau, Cathie, Aboulfadl, Siham, Nadeau, Gabrielle, Arpin, Catherine, Trudeau, Angèle, Champagne, Eugénie, Cassivi, Margaux, Rajaobelison, Gentiane, Marsan, Francine, Brière, Cristelle, Gimeno, Ana Gil, Platt, Robert, Liu, Shiliang, Althabe, Fernando, Champagne, François, Blake, Jennifer, Gagnon, Andrée, Dart, Kim, Ciofani, Luisa, Laurent, Marie-Eve St, Riverin, Daniel, Joshi, Arvind K, Lévesque, Isabelle, Mailloux, Jacques, Beaudoin, François, Monnier, Patricia, Tordjman, Laurent, Bédard, Natacha, Dorval, Gaston, Carpentier, Caroline, Lemieux, Réjean, Roberge, Suzanne, Simard, Martine, Bedrossain, Roupen, Landry, Gérard, Perreault, Gilles, Aubé, Marie-Hélène, Bibeau, Jean-Guy, Desautels, Pascale, Paradis, Eric, Hébert, Josée, Beaumont, Marie-Claude, Gaudet, Pascale, Turbide, Manon, Hétu, Valérie, Major, Brigitte, Carette, Marie-Eve, Dupont-Chalaoui, Katrie, Blais, Francine, Garcia, Dario, Gervaise, Amélie, Poungui, Lionel, Boily, Nathalie, Dubois, Emmanuelle, Hamel, Annick, Isoard, Lionel-André, Leduc-Arbour, Nathaël, Montini, Alexandre, Bossé, Stéphanie, Faucher, Elise, Gravel, Serge, Poirier, Isabelle, Hemmings, Robert, Saxon, Daniel, Engel, Francis, Goyet, Martine, Cantin, Jérôme, Charest, Nicole, Gervais, Carolyne, Malenfant, Sylvain, Raymond, Chantal, St-Pierre, Luc, Lemieux, Marie-Claude, Torjman, Laurent, Labelle, Geneviève, Waddell, Guy, Miner, Louise, Tulandi, Togas, Gagnon, Sonia, Fisch, Patricia, Gagné, Suzanne, Gagné, Alexandra, Guérin, Pascale, and Laforge, Marlène

Published
2024
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3. Does Growth Velocity Affect Associations between Birth Weight and Neurodevelopment for Infants Born Very Preterm?

Author

Afifi, Jehier, Bartholomew, Julie, Caouette, Georges, Cieslak, Zenon, de Cabo, Cecilia, Daboval, Thierry, Fraser, William D., Guillot, Mireille, Hendson, Leonora, Khurshid, Faiza, Lacaze-Masmonteil, Thierry, Lavoie, Pascal M., Larsen, Bodil, Lemyre, Brigitte, Marc, Isabelle, Mâsse, Benoît, Massé, Edith, Mohamed, Ibrahim, Nuyt, Anne Monique, Olivier, François, Pelligra, Gustavo, Perreault, Thérèse, Piedboeuf, Bruno, Qureshi, Mosarrat, Ruth, Chelsea, Strueby, Lannae, Synnes, Anne, Yusuf, Kamran, Sériès, Thibaut, Angoa, Georgina, Pronovost, Etienne, Ndiaye, Aissatou Bintou Khairy Thilor, and Simonyan, David

Published
2023
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4. Extended Gaze Following: Detecting Objects in Videos Beyond the Camera Field of View

Author

Massé, Benoit, Lathuilière, Stéphane, Mesejo, Pablo, and Horaud, Radu

Subjects
Computer Science - Computer Vision and Pattern Recognition
Abstract

In this paper we address the problems of detecting objects of interest in a video and of estimating their locations, solely from the gaze directions of people present in the video. Objects can be indistinctly located inside or outside the camera field of view. We refer to this problem as extended gaze following. The contributions of the paper are the followings. First, we propose a novel spatial representation of the gaze directions adopting a top-view perspective. Second, we develop several convolutional encoder/decoder networks to predict object locations and compare them with heuristics and with classical learning-based approaches. Third, in order to train the proposed models, we generate a very large number of synthetic scenarios employing a probabilistic formulation. Finally, our methodology is empirically validated using a publicly available dataset., Comment: FG 2019

Published
2019

5. Neural Network Based Reinforcement Learning for Audio-Visual Gaze Control in Human-Robot Interaction

Author

Lathuilière, Stéphane, Massé, Benoit, Mesejo, Pablo, and Horaud, Radu

Subjects
Computer Science - Robotics, Computer Science - Computer Vision and Pattern Recognition, Computer Science - Neural and Evolutionary Computing
Abstract

This paper introduces a novel neural network-based reinforcement learning approach for robot gaze control. Our approach enables a robot to learn and to adapt its gaze control strategy for human-robot interaction neither with the use of external sensors nor with human supervision. The robot learns to focus its attention onto groups of people from its own audio-visual experiences, independently of the number of people, of their positions and of their physical appearances. In particular, we use a recurrent neural network architecture in combination with Q-learning to find an optimal action-selection policy; we pre-train the network using a simulated environment that mimics realistic scenarios that involve speaking/silent participants, thus avoiding the need of tedious sessions of a robot interacting with people. Our experimental evaluation suggests that the proposed method is robust against parameter estimation, i.e. the parameter values yielded by the method do not have a decisive impact on the performance. The best results are obtained when both audio and visual information is jointly used. Experiments with the Nao robot indicate that our framework is a step forward towards the autonomous learning of socially acceptable gaze behavior., Comment: Paper submitted to Pattern Recognition Letters

Published
2017
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6. Tracking Gaze and Visual Focus of Attention of People Involved in Social Interaction

Author

Massé, Benoît, Ba, Silèye, and Horaud, Radu

Subjects
Computer Science - Computer Vision and Pattern Recognition
Abstract

The visual focus of attention (VFOA) has been recognized as a prominent conversational cue. We are interested in estimating and tracking the VFOAs associated with multi-party social interactions. We note that in this type of situations the participants either look at each other or at an object of interest; therefore their eyes are not always visible. Consequently both gaze and VFOA estimation cannot be based on eye detection and tracking. We propose a method that exploits the correlation between eye gaze and head movements. Both VFOA and gaze are modeled as latent variables in a Bayesian switching state-space model. The proposed formulation leads to a tractable learning procedure and to an efficient algorithm that simultaneously tracks gaze and visual focus. The method is tested and benchmarked using two publicly available datasets that contain typical multi-party human-robot and human-human interactions., Comment: 15 pages, 8 figures, 6 tables

Published
2017
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10. 50 Frequency of cytomegalovirus reinfection during pregnancy: a prospective cohort study

Author

St-Georges, Juliette, primary, Balegamire, Safari Joseph, additional, Boppana, Suresh, additional, Kang Dufour, Mi-Suk, additional, Larouche, Ariane, additional, Knoppova, Barbora, additional, Latting, Misty, additional, Renaud, Christian, additional, Masse, Benoit, additional, Giguère, Yves, additional, Forest, Jean-Claude, additional, Gantt, Soren, additional, and Boucoiran, Isabelle, additional

Published
2024
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16. A cluster-randomized trial to reduce perinatal morbidity among women with a prior cesarean delivery (PRISMA)

Author

Chaillet, Nils, primary, Masse, Benoit, additional, Grobman, William A., additional, Shorten, Allison, additional, Gauthier, Robert, additional, Rozenberg, Patrick, additional, Dugas, Marylène, additional, Pasquier, Jean-Charles, additional, Audibert, Francois, additional, Abenhaim, Haim A., additional, Demers, Suzanne, additional, Piedboeuf, Bruno, additional, Fraser, William, additional, Gagnon, Robert, additional, Monnier, Patricia, additional, Gagné, Guy-Paul, additional, Francoeur, Diane, additional, Girard, Isabelle, additional, Duperron, Louise, additional, Bédard, Marie-Josée, additional, Johri, Mira, additional, Dubé, Eric, additional, Ducruet, Thierry, additional, Girard, Mario, additional, and Bujold, Emmanuel, additional

Published
2023
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23. Su1775 HIGH-DOSE VITAMIN D AS ADJUNCT THERAPY AND THE RISK OF PEDIATRIC CROHN'S DISEASE RELAPSE: A RANDOMIZED DOUBLE-BLINDED CONTROLLED MULTICENTER CLINICAL TRIAL

Author

Jantchou, Prévost, Ahmed, Najma, El-Matary, Wael, Huynh, Hien Q., Ashok, Dhandapani, Jarweh, Celia, Guimfack, Ariane Manekeng, Tongue, Grace, Clayton, Lucy, Alos, Nathalie, Issenman, Robert, Jacobson, Kevan, Mailhot, Geneviève, Mathieu, Marie-Eve, Mâsse, Benoît, and Lacroix, Jacques

Published
2024
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31. Derivation and validation of a clinical decision rule to identify young children with skull fracture following isolated head trauma

Author

Gravel, Jocelyn, Gouin, Serge, Chalut, Dominic, Crevier, Louis, Decarie, Jean-Claude, Elazhary, Nicolas, and Masse, Benoit

Subjects
Medical research, Medicine, Experimental, Head injuries -- Diagnosis, Children -- Injuries, Tomography -- Standards, Health
Abstract

Background: There is no clear consensus regarding radiologic evaluation of head trauma in young children without traumatic brain injury. We conducted a study to develop and validate a clinical decision rule to identify skull fracture in young children with head trauma and no immediate need for head tomography. Methods: We performed a prospective cohort study in 3 tertiary care emergency departments in the province of Quebec. Participants were children less than 2 years old who had a head trauma and were not at high risk of clinically important traumatic brain injury (Glasgow Coma Scale score < 15, altered level of consciousness or palpable skull fracture). The primary outcome was skull fracture. For each participant, the treating physician completed a standardized report form after physical examination and before radiologic evaluation. The decision to order skull radiography was at the physician's discretion. The clinical decision rule was derived using recursive partitioning. Results: A total of 811 patients (49 with skull fracture) were recruited during the derivation phase. The 2 predictors identified through recursive partitioning were parietal or occipital swelling or hematoma and age less than 2 months. The rule had a sensitivity of 94% (95% confidence interval [CI] 83%-99%) and a specificity of 86% (95% CI 84%-89%) in the derivation phase. During the validation phase, 856 participants (44 with skull fracture) were recruited. The rule had a sensitivity of 89% and a specificity of 87% during this phase. Interpretation: The clinical decision rule developed in this study identified about 90% of skull fractures among young children with mild head trauma who had no immediate indication for head tomography. Use of the rule would have reduced the number of radiologic evaluations by about 60%., Head trauma is common among children visiting the emergency department and in most cases is minor. (1) However, so-called 'minor' head trauma can be associated with dangerous complications. For example, [...]

Published
2015
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41. Flexible Buprenorphine/Naloxone Model of Care for Reducing Opioid Use in Individuals With Prescription-Type Opioid Use Disorder: An Open-Label, Pragmatic, Noninferiority Randomized Controlled Trial.

Author

Jutras-Aswad, Didier, Le Foll, Bernard, Ahamad, Keith, Lim, Ron, Bruneau, Julie, Fischer, Benedikt, Rehm, Jürgen, Wild, T. Cameron, Wood, Evan, Brissette, Suzanne, Gagnon, Lea, Fikowski, Jill, Ledjiar, Omar, Masse, Benoit, Socias, M. Eugenia, and OPTIMA Research Group within the Canadian Research Initiative in Substance Misuse

Subjects
METHADONE treatment programs, RESEARCH, SUBSTANCE abuse, NARCOTIC antagonists, DRUG overdose, BUPRENORPHINE, EVALUATION research, COMPARATIVE studies, RANDOMIZED controlled trials, RESEARCH funding, OPIOID analgesics
Abstract

Objective: Extensive exposure to prescription-type opioids has resulted in major harm worldwide, calling for better-adapted approaches to opioid agonist therapy. The authors aimed to determine whether flexible take-home buprenorphine/naloxone is as effective as supervised methadone in reducing opioid use in prescription-type opioid consumers with opioid use disorder.Methods: This seven-site, pan-Canadian, 24-week, pragmatic, open-label, noninferiority, two-arm parallel randomized controlled trial involved treatment-seeking adults with prescription-type opioid use disorder. Participants were randomized in a 1:1 ratio to treatment with sublingual buprenorphine/naloxone (target dosage, 8 mg/2 mg to 24 mg/6 mg per day; flexible take-home dosing) or oral methadone (≈60-120 mg/day; closely supervised). The primary outcome was the proportion of opioid-free urine drug screens over 24 weeks (noninferiority margin, 15%). All randomized participants were analyzed, excluding one who died shortly after randomization, for the primary analysis (modified intention-to-treat analysis).Results: Of 272 participants recruited (mean age, 39 years [SD=11]; 34.2% female), 138 were randomized to buprenorphine/naloxone and 134 to methadone. The mean proportion of opioid-free urine drug screens was 24.0% (SD=34.4) in the buprenorphine/naloxone group and 18.5% (SD=30.5) in the methadone group, with a 5.6% adjusted mean difference (95% CI=-0.3, +∞). Participants in the buprenorphine/naloxone group had 0.47 times the odds (95% CI=0.24, 0.90) of being retained in the assigned treatment compared with those in the methadone group. Overall, 24 drug-related adverse events were reported (12 in the buprenorphine/naloxone group [N=8/138; 5.7%] and 12 in the methadone group [N=12/134; 9.0%]) and mostly included withdrawal, hypogonadism, and overdose.Conclusions: The buprenorphine/naloxone flexible model of care was safe and noninferior to methadone in reducing opioid use among people with prescription-type opioid use disorder. This flexibility could help expand access to opioid agonist therapy and reduce harms in the context of the opioid overdose crisis. [ABSTRACT FROM AUTHOR]

Published
2022
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42. Job strain and risk of acute recurrent coronary heart disease events

Author

Aboa-Eboule, Corine, Brisson, Chantal, Maunsell, Elizabeth, Masse, Benoit, Milot, Alain, Theroux, Pierre, Dagenais, Gilles R., Bourbonnais, Renee, and Vezina, Michel

Subjects
Coronary heart disease -- Risk factors, Coronary heart disease -- Care and treatment, Job stress -- Health aspects
Abstract

A study aims to determine if job strain increases the risk of recurrent coronary heart disease (CHD) events. Results indicate that chronic job strain after a first myocardial infarction is related with an increased risk of recurrent CHD.

Published
2007

47. Risk reduction counseling is associated with decreased HIV transmission-associated behaviors in high-risk Indian heterosexuals

Author

Solomon, Sunil S., Solomon, Suniti, Masse, Benoit R., Srikrishnan, A.K., Beauchamp, Geetha, Thamburaj, Easter, Gulvady, Menaka; Anand, S., and Mayer, Kenneth H.

Subjects
Indians -- Sexual behavior, Indians -- Health aspects, HIV infection -- Risk factors, Health
Abstract

A study was conducted to estimate the incidence of HIV and impact of risk-reduction counseling (RRC) in a cohort of people with high-risk behavior for HIV transmission in Chennai, India. Results reveal that the individualized sexual RRC seems to be a useful intervention to reduce risk-taking behavior among at-risk hetero-sexuals in India.

Published
2006

48. Effects of job strain on blood pressure: a prospective study of male and female white-collar workers

Author

Guimont, Chantal, Brisson, Chantal, Dagenais, Gilles R., Milot, Alain, Vezina, Michel, Masse, Benoit, Moisan, Jocelyne, Laflamme, Nathalie, and Blanchette, Caty

Subjects
Hypertension -- Causes of, Hypertension -- Research, Job stress -- Influence, Job stress -- Research, White collar workers -- Health aspects, White collar workers -- Case studies, Government, Health care industry
Abstract

Objectives. We evaluated whether cumulative exposure to job strain increases blood pressure. Methods. A prospective study of 8395 white-collar workers was initiated during 1991 to 1993. At follow-up, 7.5 years later, 84% of the participants were reassessed to estimate cumulative exposure to job strain. Results. Compared with men who had never been exposed, men with cumulative exposure and those who became exposed during follow-up showed significant systolic blood pressure increments of 1.8 mm Hg (95% confidence interval [CI]=0.1, 3.5) and 1.5 mm Hg (95% CI=0.2, 2.8), respectively, and relative risks of blood pressure increases in the highest quintile group of 1.33 (95% CI= 1.01, 1.76) and 1.40 (95% CI= 1.14, 1.73). Effect magnitudes were smaller among women. Effects tended to be more pronounced among men and women with low levels of social support at work. Conclusions. Among these white-collar workers, exposure to cumulative job strain had a modest but significant effect on systolic blood pressure among men. The risk was of comparable magnitude to that observed for age and sedentary behavior. Men and women with low levels of social support at work appeared to be at higher risk for increases in blood pressure.

Published
2006

49. Nonnegligible increasing temporal trends in unprotected anal intercourse among men who have sexual relations with other men in Montreal

Author

George, Clemon, Alary, Michel, Otis, Joanne, Parent, Raymond, Bruno, Turmel, Demers, Eric, Vincelette, Jean, Remis, Robert S., Masse, Benoit, and Lavoie, Rene

Subjects
Montreal, Quebec -- Social aspects, Anal intercourse -- Risk factors, Anal intercourse -- Research, Men -- Sexual behavior, Health
Abstract

The temporal trends in unprotected anal intercourse (UAI) among men who have sex with men (MSM) are determined. The results concluded that continuous trend analysis is important as it allows to follow UAI closely and to implement intervention strategies that might help to stop or reduce the present trend.

Published
2006

50. HIV prevalence, sociodemographic, and behavioral correlates and recruitment methods among injection drug users in St. Petersburg, Russia

Author

Shaboltas, Alla V., Toussova, Olga V., Hoffman, Irving F., Heimer, Robert, Verevochkin, Sergei V., Ryder, Robert W., Khoshnood, Kaveh, Perdue, Tom, Masse, Benoit R., and Kozlov, Andrei P.

Subjects
Saint Petersburg, Russia -- Economic aspects, Saint Petersburg, Russia -- Health policy, Intravenous drug abuse -- Risk factors, HIV infection -- Causes of, Health
Abstract

The combination of political, economic, and social changes that accompanied the fall of the Soviet Union has resulted in a dramatic epidemic of drug abuse in Russia, which has led to an epidemic of HIV-1, driven by injection drug use. The estimated HIV prevalence of 30% places St. Petersburg among the worst injection drug users concentrated epidemics in Europe.

Published
2006

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