Review
Copyright ©The Author(s) 2016.
World J Orthop. Nov 18, 2016; 7(11): 709-717
Published online Nov 18, 2016. doi: 10.5312/wjo.v7.i11.709
Table 3 Patient Health Questionnaire 21
Over the past 2 wk, how often have you been bothered by any of the following problems?Not at allSeveral daysMore than half the daysNearly every day
Litter interest or pleasure in doing things02122232
Feeling down, depressed, or hopeless02122232