|
Characteristics
|
No. of Controls(%)
|
No. of Cases (%)
|
P Value
|
|---|
|
Age
|
|
Mean ± SD
|
51.85 ± 10.31
|
51.75 ± 9.39
| |
|
< 40
|
82(14.7)
|
41(10.2)
|
0.02
|
|
40-
|
333(59.8)
|
274(68.2)
|
|
≥ 60
|
142(25.5)
|
87(21.6)
|
|
BMI
|
|
≤ 18.5
|
35(6.3)
|
14(3.5)
|
0.12
|
|
18.5-
|
274(49.2)
|
211(52.5)
|
|
≥ 24.0
|
248(44.5)
|
177(44.0)
|
|
Urban and Rural Status
|
|
Rural
|
236(42.4)
|
232(57.7)
|
< 0.01
|
|
Urban
|
321(57.6)
|
170(42.3)
|
|
Education Level
|
|
Primary School or Below
|
162(29.1)
|
98(24.4)
|
0.27
|
|
Middle School
|
175(31.4)
|
135(33.6)
|
|
Senior School and Higher
|
220(39.5)
|
169(42.0)
|
|
Occupation Type a
|
|
White Collar
|
273(49.0)
|
233(58.2)
|
0.01
|
|
Blue Collar
|
284(51.0)
|
169(41.8)
|
|
Ethnicity
|
|
Han
|
529(95.0)
|
386(96.0)
|
0.27
|
|
Other
|
28(5.0)
|
16(4.0)
|
- a The white collar occupation referred to people work that need mental rather than physical effort, such as office, doctor, accountant, business, teacher, etc.; the blue collar occupation referred to people work as manual labor, such as worker, farmer, cleaner, etc.
