Table 2 Basic characteristics of study population according to economic activity status

Sex

<0.0001

 Men

1220 (86.4)

466 (79.3)

 Women

192 (13.6)

122 (20.7)

Age (years)

< 0.0001

 <40

317 (22.9)

95 (16.7)

 40 ~ 49

408 (29.5)

115 (20.2)

 50 ~ 59

467 (33.7)

193 (33.8)

 ≥60

193 (13.9)

167 (29.3)

Education

< 0.0001

 Middle school

456 (32.3)

279 (47.5)

 High school

669 (47.4)

240 (40.8)

 College or higher education

287 (20.3)

69 (11.7)

Household income

< 0.0001

 1^st quartile

1016 (72.0)

383 (65.1)

 2^nd quartile

262 (18.6)

136 (23.1)

 3^rd quartile

91 (6.4)

48 (8.2)

 4^th quartile

43 (3.0)

21 (3.6)

Smoking

0.0017

 Current

722 (51.1)

253 (43.0)

 Past

278 (19.7)

132 (22.5)

 Never

412 (29.2)

203 (34.5)

Alcohol consumption

< 0.0001

 Current

1076 (76.2)

365 (62.1)

 Past

91 (36.4)

86 (14.6)

 Never

245 (17.4)

137 (23.3)

Registered as disabled

< 0.0001

 Yes

66 (4.7)

81 (13.8)

 No

1346 (95.3)

507 (86.2)

Mean of disability rating^a

5.04 ± 1.16

4.19 ± 1.70

0.0016