Letters Section Editor: Stephen J. Lurie,
MD, PhD, Senior Editor.
To the Editor: We have 2 concerns about the
study by Ms van Schoor and colleagues.1 First,
many participants were lost to follow-up, potentially creating differences
between the intervention and control groups that might have biased the results.
Second, many participants assigned to wear the hip protectors stopped doing
so during the trial. This dilution of the intervention group with nonusers
decreases the power of the study to detect any possible benefit of hip protectors
that were actually worn.
Cummings P, Weiss NS. External Hip Protectors and Risk of Hip FractureExternal Hip Protectors and Risk of Hip Fracture. JAMA. 2003;290(7):883. doi:10.1001/jama.290.7.883-a