[Controlled trials on the efficacy of occupational therapy with elderly. Part I: Research question, search strategy and methodological quality of trials].

OBJECTIVE

To investigate how far controlled trials give evidence for the assumption that occupational therapy treatment improves or stabilises the competence, autonomy or satisfaction of elderly while performing every day activities.

METHOD

Clinical trials with randomised, quasi-experimental or crossover control group design and "occupational therapy" as the main subject were identified by an electronic search of the medline database. The criteria for the analysis were derived from the CONSORT-Statement and adapted for occupational therapy. They relate to the quality of sample, intervention, measurement and data analysis.

RESULTS

The 31 identified studies (RCT, n=23; quasi-experimental, n=2; crossover, n=6) were mainly conducted in Great Britain, USA and Canada, but not in Germany. They are heterogeneous regarding the characteristics and size of samples, the outcome variables and treatment approaches. They give evidence for a significant efficacy of occupational therapy with elderly, but also show some methodological shortcomings.

CONCLUSION

While on an international level the positive potential of occupational therapy for the elderly is evident, there is a strong need for further studies in Germany. Therefore a methodological harmonization and a co-operation with occupational therapy research and occupational science emerging currently in Europe are recommended.