Poppel, M.N. van

support home care workers study worker subject month compliance group intervention benefit analysis health attitude number trial netherland scale period baseline difference cost-effectiveness adherence signi 12 months body mass index intervention group phase table factor prevention treatment effect questionnaire signi ficantly calendar ratio confidence degree calendar days compliance rate intention intervention period poppel phase i van poppel mn population result control predictor ficacy koes bw rotterdam spine home care organization participant 1 week prevalence regression analysis feasibility self-ef model likert university ficant plane signi ficant difference effectiveness erasmus university rotterdam figure pain reduction randomized phase ii home care score pain disability scale study population measure determinant disability self-ef ficacy