Quality of life among lower limb prosthetic users in Jordan: a cross-sectional study using the Arabic SF-36.

The cross-sectional design prevents causal inference. Convenience sampling may introduce selection bias, potentially underrepresenting those with limited access to care. Key clinical variables such as prosthetic type, fit, duration of use, cause of amputation, pain severity, and rehabilitation intensity were not collected. Subgroups with hip and knee disarticulation were very small (n=4 total), reducing statistical power for these comparisons. The regression models explained only 3% to 19% of the variance in quality of life, indicating many unmeasured factors influence outcomes. Self-reported data may be subject to recall and response bias, and cultural norms may influence how emotional well-being is reported.

The authors declare no conflicts of interest. The study was not funded by a specific grant.

Do not conclude that amputation level has no impact on quality of life. While it was not significant in the regression model, group comparisons showed that transfemoral users had lower scores in role functioning and overall quality of life than transtibial users. The regression model may have lacked power or failed to capture the specific impact of amputation level due to the small number of participants with higher-level amputations.