Skip to main content

Table 2 Item statistics for PHQ-9 (major depression disorder)

From: An arabic translation, reliability, and validation of Patient Health Questionnaire in a Saudi sample

PHQ-9 items Mean Std. deviation Corrected item-total correlation Cronbach’s alpha if item deleted Change in Cronbach’s alpha if item deleted
Little interest or pleasure in doing things 1.08 0.843 0.654 0.835 −0.022
Feeling down, depressed, or hopeless 0.98 0.853 0.698 0.831 −0.026
Trouble falling or staying asleep, or sleeping too 1.27 1.042 0.558 0.846 −0.011
Feeling tired or having little energy 1.33 0.953 0.674 0.832 −0.025
Poor appetite or overeating 0.99 1.014 0.577 0.843 −0.022
Feeling bad about yourself—or that you are a failure or have let yourself or family down 0.77 0.951 0.626 0.838 −0.009
Trouble concentrating on things, such as reading the newspaper or watching TV 0.67 0.864 0.534 0.847 −0.010
Moving or speaking so slowly that other people could have or the opposite? 0.45 0.789 0.548 0.845 −0.012
Thoughts that you would be better off dead or of hurting 0.16 0.543 0.378 0.859 0.002
Total 7.71 5.433 0.400 0.857 0.000