This report identifies demographic and health-related baseline factors associated with non-compliance and attrition in elderly subjects participating in a preventive intervention study over a 4-year follow-up period.
The Cox proportional hazards model and polychotomous logistic regression were used to evaluate time to clinic assessment non-compliance and type of non-participation.
Of 1785 subjects, 35.6% were non-compliant during follow-up which meant they were eligible to participate at the time they were contacted but would not or could not return for an assessment.
Refusals due to a lack of continuing interest or being too busy, and those citing health problems constituted the major subgroups of non-compliers.
Death, unable to contact, and ineligible due to disenrolment or moving away accounted for nearly 20%. Four-year compliance was achieved by 44.4% of the participants.
Time to non-compliance was significantly shorter with older age, lower annual income, poorer personal health ranking, and, to a marginal extent, depression.
Lower annual income was associated with all reasons for non-participation including disenrolment or moving.
Other factors correlated with specific types of non-participation.
These results can be useful in designing more effective cohort maintenance strategies.
Greater resources may be allocated to subgroups who are less likely to continue.
Mots-clés Pascal : Etude longitudinale, Etude cohorte, Participation, Vieillard, Programme sanitaire, Prévention, Analyse régression, Méthodologie, Observance, Perte effectif, Homme
Mots-clés Pascal anglais : Follow up study, Cohort study, Participation, Elderly, Sanitary program, Prevention, Regression analysis, Methodology, Human
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 96-0244458
Code Inist : 002B30A01C. Création : 199608.