GGEM: Gender, Geography, and EMployment differences based on mobility levels among lower limb prosthesis users living in the United States.

This was a cross-sectional analysis of existing records, so it cannot show that employment, gender, or region caused higher mobility. Employment was measured only at the time of the survey, and past employment history and vocational rehabilitation services were not available. The sample was a convenience sample from clinics in selected states, so it may not represent all US prosthesis users. The sample included only unilateral prosthesis users with mobility data, so results do not apply to bilateral users, wheelchair users, or people who never used a prosthesis. The definition of non-working age relied on Medicare eligibility at 65, which may misclassify retired prosthesis users. Comorbidities and prosthesis type were not analysed.

The authors reported no financial support and no potential conflicts of interest.

Do not conclude that employment improves mobility or that mobility improves employment. The study measured employment and mobility at one time in existing records, so it cannot show the direction of the relationship.