Join2move usage drop-off

Patients with knee/hip OA used Join2move less than intended: 94% started, 46% hit 6/9 modules, only 19% finished all nine.

Source

Adherence to a web-based physical activity intervention for patients with knee and/or hip osteoarthritis: a mixed method study

Bossen D, Buskermolen M, Veenhof C, et al. · Journal of medical Internet research · 2013

What they did

Mixed-methods analysis of usage logs plus predictors for a web-based PA intervention (Join2move) among knee/hip osteoarthritis patients.

Module completion fell from 80% (module 1) to 55% (module 2); older age and comorbidity predicted lower completion (OR 0.33 for comorbidity).

The limits

Does not test clinical OA outcomes of high vs low usage in an RCT contrast here.

Key terms

Join2move: Web-based physical activity program for knee/hip OA.
Module completion: Finishing weekly program units used as adherence metric.
Usage attrition: Decline in participation across program weeks.
Comorbidity: Additional diseases predicting lower completion.
Mixed methods: Combining quantitative usage data with qualitative reasons.
Osteoarthritis (OA): Degenerative joint disease of knee and/or hip in this sample.

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Full 9-module completion?

Common questions

Start rate?

94% started the program.

Full completion?

19% finished all 9 modules.

Early drop?

80% completed module 1; 55% module 2.

Negative predictors?

Higher age and comorbidity.