Table 2.

Patient health questionnaire-9 scoring in cases and controls

Depression	Cases, n (%)	Controls, n (%)	Total
None/minimal	0	71 (71.0)	71
Mild	2 (2.0)	13 (13.0)	15
Moderate	5 (5.0)	12 (12.0)	17
Moderately severe	45 (45.0)	4 (4.0)	49
Severe	48 (48.0)	0	48
Total	100 (100.0)	100 (100.0)	200

χ²=164.255; df=4; P<0.001; Highly significant, The PHQ-9 scores in cases varied between 19.41 and 21.17 with a standard error of 0.442, The PHQ-9 scores in controls varied between 4.29 and 5.85 with a SE of 0.395. PHQ-9: Patient health questionnaire-9, SE: Standard error