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PubMed Publications| Keyword search (4,163 papers available) |  |
"Levis AW" Authored Publications:
| Title | Authors | PubMed ID | |
|---|---|---|---|
| 1 | Group sample sizes in nonregulated health care intervention trials described as randomized controlled trials were overly similar | Thombs BD; Levis AW; Azar M; Saadat N; Riehm KE; Sanchez TA; Chiovitti MJ; Rice DB; Levis B; Fedoruk C; Lyubenova A; Malo Vázquez de Lara AL; Kloda LA; Benedetti A; Shrier I; Platt RW; Kimmelman J; | 31866472 LIBRARY |
| 2 | Equivalency of the diagnostic accuracy of the PHQ-8 and PHQ-9: a systematic review and individual participant data meta-analysis | Wu Y; Levis B; Riehm KE; Saadat N; Levis AW; Azar M; Rice DB; Boruff J; Cuijpers P; Gilbody S; Ioannidis JPA; Kloda LA; McMillan D; Patten SB; Shrier I; Ziegelstein RC; Akena DH; Arroll B; Ayalon L; Baradaran HR; Baron M; Bombardier CH; Butterworth P; Carter G; Chagas MH; Chan JCN; Cholera R; Conwell Y; de Man-van Ginkel JM; Fann JR; Fischer FH; Fung D; Gelaye B; Goodyear-Smith F; Greeno CG; Hall BJ; Harrison PA; Härter M; Hegerl U; Hides L; Hobfoll SE; Hudson M; Hyphantis T; Inagaki M; Jetté N; Khamseh ME; Kiely KM; Kwan Y; Lamers F; Liu SI; Lotrakul M; Loureiro SR; Löwe B; McGuire A; Mohd-Sidik S; Munhoz TN; Muramatsu K; Osório FL; Patel V; Pence BW; Persoons P; Picardi A; Reuter K; Rooney AG; Santos IS; Shaaban J; Sidebottom A; Simning A; Stafford L; Sung S; Tan PLL; Turner A; van Weert HC; White J; Whooley MA; Winkley K; Yamada M; Benedetti A; Thombs BD; | 31298180 LIBRARY |
| 3 | Probability of major depression diagnostic classification using semi-structured versus fully structured diagnostic interviews | Levis B; Benedetti A; Riehm KE; Saadat N; Levis AW; Azar M; Rice DB; Chiovitti MJ; Sanchez TA; Cuijpers P; Gilbody S; Ioannidis JPA; Kloda LA; McMillan D; Patten SB; Shrier I; Steele RJ; Ziegelstein RC; Akena DH; Arroll B; Ayalon L; Baradaran HR; Baron M; Beraldi A; Bombardier CH; Butterworth P; Carter G; Chagas MH; Chan JCN; Cholera R; Chowdhary N; Clover K; Conwell Y; de Man-van Ginkel JM; Delgadillo J; Fann JR; Fischer FH; Fischler B; Fung D; Gelaye B; Goodyear-Smith F; Greeno CG; Hall BJ; Hambridge J; Harrison PA; Hegerl U; Hides L; Hobfoll SE; Hudson M; Hyphantis T; Inagaki M; Ismail K; Jetté N; Khamseh ME; Kiely KM; Lamers F; Liu SI; Lotrakul M; Loureiro SR; Löwe B; Marsh L; McGuire A; Mohd Sidik S; Munhoz TN; Muramatsu K; Osório FL; Patel V; Pence BW; Persoons P; Picardi A; Rooney AG; Santos IS; Shaaban J; Sidebottom A; Simning A; Stafford L; Sung S; Tan PLL; Turner A; van der Feltz-Cornelis CM; van Weert HC; Vöhringer PA; White J; Whooley MA; Winkley K; Yamada M; Zhang Y; Thombs BD; | 29717691 LIBRARY |
| 4 | Shortening self-report mental health symptom measures through optimal test assembly methods: Development and validation of the Patient Health Questionnaire-Depression-4 | Ishihara M; Harel D; Levis B; Levis AW; Riehm KE; Saadat N; Azar M; Rice DB; Sanchez TA; Chiovitti MJ; Cuijpers P; Gilbody S; Ioannidis JPA; Kloda LA; McMillan D; Patten SB; Shrier I; Arroll B; Bombardier CH; Butterworth P; Carter G; Clover K; Conwell Y; Goodyear-Smith F; Greeno CG; Hambridge J; Harrison PA; Hudson M; Jetté N; Kiely KM; McGuire A; Pence BW; Rooney AG; Sidebottom A; Simning A; Turner A; White J; Whooley MA; Winkley K; Benedetti A; Thombs BD; | 30238571 LIBRARY |
| 5 | Evaluation of Journal Registration Policies and Prospective Registration of Randomized Clinical Trials of Nonregulated Health Care Interventions | Azar M; Riehm KE; Saadat N; Sanchez T; Chiovitti M; Qi L; Rice DB; Levis B; Fedoruk C; Levis AW; Kloda LA; Kimmelman J; Benedetti A; Thombs BD; | 30855655 LIBRARY |
| Title: | Group sample sizes in nonregulated health care intervention trials described as randomized controlled trials were overly similar | ||||
| Authors: | Thombs BD, Levis AW, Azar M, Saadat N, Riehm KE, Sanchez TA, Chiovitti MJ, Rice DB, Levis B, Fedoruk C, Lyubenova A, Malo Vázquez de Lara AL, Kloda LA, Benedetti A, Shrier I, Platt RW, Kimmelman J | ||||
| Link: | https://pubmed.ncbi.nlm.nih.gov/31866472/ | ||||
| DOI: | 10.1016/j.jclinepi.2019.12.011 | ||||
| Publication: | Journal of clinical epidemiology | ||||
| Keywords: | Bias; Controlled trials; Methods; RCTs; Randomization; Randomized controlled trials; Research reporting; | ||||
| PMID: | 31866472 | Category: | J Clin Epidemiol | Date Added: | 2019-12-24 |
| Dept Affiliation: |
LIBRARY
1 Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Quebec, Canada; Department of Psychiatry, McGill University, Montreal, Quebec, Canada; Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, Quebec, Canada; Department of Medicine, McGill University, Montreal, Quebec, Canada; Department of Psychology, McGill University, Montreal, Quebec, Canada; Department of Educational and Counselling Psychology, McGill University, Montreal, Quebec, Canada. Electronic address: brett.thombs@mcgill.ca. 2 Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Quebec, Canada; Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, Quebec, Canada. 3 Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Quebec, Canada. 4 Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Quebec, Canada; Department of Psychology, McGill University, Montreal, Quebec, Canada. 5 Library, Concordia University, Montreal, Quebec, Canada. 6 Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, Quebec, Canada; Respiratory Epidemiology and Clinical Research Unit, McGill University Health Centre, Montreal, Quebec, Canada. 7 Studies of Translation, Ethics and Medicine (STREAM), Biomedical Ethics Unit, McGill University, Montreal, Quebec, Canada. |
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Description: |
Objectives: We evaluated whether sample sizes in different arms of two-arm parallel group randomized controlled trials of nonregulated interventions were systematically closer in size than would plausibly occur by chance if simple randomization had been applied. Study design and setting: We searched PubMed for trials of nonregulated health care interventions that did not report using restricted randomization from journals in behavioral sciences and psychology, nursing, nutrition and dietetics, rehabilitation, and surgery. We emailed trial authors to clarify randomization procedures. Results: We identified 148 nonregulated intervention trials that indicated they used simple randomization. Difference in trial arm sizes was smaller than would be predicted by chance if simple randomization had occurred in all trials (P < 0.001). Rather than approximately half of the trials being within a 50% prediction interval for the difference, 96% had differences within this interval. Results were similar and statistically significant (P < 0.001) for trials that were published in journals with impact factors = 4 and when stratified by type of nonregulated intervention. Conclusion: There is a need for education and better understanding of clinical trial methods to ensure that randomization procedures are implemented as intended and reported fully and accurately. |
