Internal consistency of the study was determined for each subscale; in the Moroccan study, Cronbach’s alpha
oefficients were 0.596 for JDL, 0.383 PJD, 0.764 for SoSu, 0.737 for workplace ergonomics, 0.450 for environmental
risks and 0.516 for medication use. Cronbach’s alpha for PJD was clearly low, and after confirmatory