Table 1 General characteristics of subjects

Age (years)

<0.01

 20–29

47 (3.0)

44 (19.8)

 30–39

156 (10.1)

110 (49.5)

 40–49

847 (54.6)

52 (23.4)

 50–59

502 (32.3)

16 (7.2)

Sex

<0.01

 Men

1521 (98.0)

190 (85.6)

 Women

31 (2.0)

32 (14.4)

BMI (kg/m²)

0.21

  < 25

839 (54.1)

110 (49.5)

 ≧25

713 (45.9)

112 (50.5)

Smoking

<0.01

 Never

423 (27.3)

99 (44.6)

 Past

502 (32.3)

46 (20.7)

 Current

627 (40.4)

77 (34.7)

Drinking

0.90

 Non-drinker

426 (27.4)

60 (27.0)

 Drinker

1126 (72.6)

162 (73.0)

Exercise

<0.01

 Physical activity

147 (9.5)

8 (3.6)

 Physical inactivity

1405 (90.5)

214 (96.4)

Factory region

<0.01

 Factory A

844 (54.4)

144 (64.9)

 Factory B

708 (45.6)

78 (35.1)

Working hours (weekly)

<0.01

 ≦40

315 (20.3)

21 (9.5)

 41–51

600 (38.7)

71 (32.0)

 52–59

519 (33.4)

66 (29.7)

 ≧60

118 (7.6)

64 (28.8)

Anxiety

<0.01

 No

1447 (93.2)

190 (85.6)

 Yes

105 (6.8)

32 (14.4)

Depression

<0.01

 No

1146 (73.8)

137 (61.7)

 Yes

406 (26.2)

85 (38.3)