Differential attrition in health behaviour change trials: A systematic review and meta-analysis.
Objective:Attrition is a common problem in health behaviour change (HBC) trials. When the degree of attrition differs between treatment conditions, then this is called differential attrition and is regarded as a major threat to internal validity. The primary research question of this study was: how...
| Publicado en: | Psychology & Health Vol. 30; no. 1; pp. 122 - 135 |
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| Autores principales: | , , , |
| Formato: | research systematic review tables/charts Journal Article |
| Publicado: |
Taylor & Francis Ltd
Jan2015
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=103924542&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 103924542 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 08870446 7WK jtl: Psychology & Health issn: 08870446 maglogo: N pubinfo: dt: Jan2015 vid: 30 iid: 1 pid: 377 pub: Taylor & Francis Ltd place: Philadelphia, Pennsylvania artinfo: ui: 103924542 99907457 10.1080/08870446.2014.953526 103924542 ppf: 122 ppct: 13 formats: fmt: @attributes: type: P tig: atl: Differential attrition in health behaviour change trials: A systematic review and meta-analysis. aug: au: Crutzen, Rik Viechtbauer, Wolfgang Spigt, Mark Kotz, Daniel affil: CAPHRI School for Public Health and Primary Care, Maastricht University, Maastricht, The Netherlands sug: subj: Health Behavior Behavioral Changes Behavioral Research Human Systematic Review Meta Analysis Confidence Intervals PubMed Self-Efficacy Descriptive Statistics T-Tests McNemar's Test Maximum Likelihood Clinical Trial Registry ab: Objective:Attrition is a common problem in health behaviour change (HBC) trials. When the degree of attrition differs between treatment conditions, then this is called differential attrition and is regarded as a major threat to internal validity. The primary research question of this study was: how often and to what degree does differential attrition occur in HBC trials? Design:A systematic review and meta-analysis of a random selection of HBC trials (k = 60). We meta-analysed the relative attrition rates using a random-effects model and examined the relationship between the relative attrition rates and the potential moderators: the amount of human contact in delivery and the intensity of the intervention/control condition, the type of control condition, and the follow-up intensity and duration. Main outcome measures:Relative attrition rates. Results: The average attrition rate was 18% (SD = .15;M = .15) in the intervention and 17% (SD = .13;M = .13) in the control conditions. The estimated average relative attrition rate was 1.10 (95% CI: 1.01–1.20,p = .02), suggesting an overall higher attrition rate of 10% in the intervention conditions. This relative attrition rate was not related to any of the potential moderators. Conclusion:There is indication of a slightly higher amount of attrition on average in the intervention conditions of HBC trials. pubtype: Academic Journal doctype: meta analysis research systematic review tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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