Korean Journal of Family Practice

Table. 1.

The difference of PHQ-9 score by the characteristics of study group

Variable	No.(%)	PHQ-9 score	P-value^a
Sex			<0.001
Male	754 (46.5)	2.09±0.001
Female	866 (53.5)	3.47±0.001
Age, y			<0.001
19–29	877 (54.1)	2.41±0.001
30–39	743 (45.9)	3.06±0.001
Household members			<0.001
1–2	380 (23.5)	3.01±0.002
3–6	1,240 (76.5)	2.64±0.001
Marital status			<0.001
Married	721 (44.5)	2.41±0.001
Single	899 (55.5)	2.96±0.001
Education			<0.001
≤High school	632 (39.0)	2.88±0.001
≥College	988 (61.0)	2.64±0.001
Alcohol			<0.001
≤4 Times a month	1,235 (76.2)	2.66±0.001
≥Twice a week	385 (23.8)	3.01±0.002
Current smoking			<0.001
No	1,255 (77.5)	2.62±0.001
Yes	365 (22.5)	3.12±0.002
Physical activity (moderate-intensity)			<0.001
No	1,134 (70.0)	2.88±0.001
Yes	486 (30.0)	2.44±0.002
Aerobic exercise			<0.001
No	730 (45.1)	2.66±0.001
Yes	890 (54.9)	2.80±0.001
Walking			<0.001
≤4 Times a week	792 (48.9)	2.82±0.001
≥5 Times a week	828 (51.1)	2.67±0.001
Muscular exercise			<0.001
None	1,144 (70.6)	2.81±0.001
≥Once a week	476 (29.4)	2.58±0.002
Perceived health status			<0.001
Very good or good	604 (37.3)	1.57±0.001
Fair or poor or very poor	1,016 (62.7)	3.43±0.001
Health screening			<0.001
Yes	899 (54.9)	2.37±0.001
No	731 (45.1)	3.19±0.002
Unmet medical needs			<0.001
No	1,483 (91.5)	2.52±0.001
Yes	137 (8.5)	5.05±0.004
Perceived body type			<0.001
Thin or normal	872 (53.8)	2.56±0.001
Obese	748 (46.2)	2.94±0.001
Weight-control			<0.001
Yes	1,023 (63.1)	2.83±0.001
No	597 (36.9)	2.60±0.001
Pain and discomfort			<0.001
No	1368 (84.4)	2.46±0.001
Yes	252 (15.6)	4.28±0.003
Total	1,620 (100)	2.74±0.001

Values are presented as mean±standard error after weighted analysis method.

PHQ-9, Patient Health Questionnaire-9.

^aBy weighted t-test.