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. 2012 Nov 16;12:987. doi: 10.1186/1471-2458-12-987

Table 2.

Basic characteristics of the study subjects according to the categorized amount of alcohol intake

 
Amount of alcohol intake (g/day)a
P for trendb
 
Non-drinking
≤11.5
11.5-35.8
>35.8
 
  (n = 149) (n = 250) (n = 249) (n = 251)  
Age (years)c
45.0 (38.0–55.0)
42.0 (36.0–53.0)
47.0 (38.0–56.0)
50.0 (42.0–57.0)
< 0.001
Education (%)
 
 
 
 
 
  ≥12 years
35.6
56.8
49.0
44.6
0.717
Occupation (%)
 
 
 
 
 
  Non office work
11.4
25.6
21.3
20.3
0.270
Smoking status (%)
 
 
 
 
 
  Never smoker
39.6
41.6
36.1
26.7
0.001
  Ex smoker
9.4
16.0
12.4
11.6
0.899
  Current smoker
51.0
42.4
51.4
61.8
0.001
BMI (kg/m2)c
23.8 (21.6–26.1)
23.7 (21.9–25.9)
23.3 (21.5–25.5)
23.1 (21.1–25.3)
0.009
Physical activity (%)
 
 
 
 
 
  ≥10 min/day
71.1
83.6
76.7
80.9
0.209
Depressive symptoms (%)
 
 
 
 
 
  SDS ≥45
36.9
27.2
29.7
33.5
0.937
Sleep duration (%)
 
 
 
 
 
  <7 hour
53.7
52.8
47.8
42.2
0.009
  7-8 hour
32.2
33.2
39.4
40.2
0.042
  ≥8 hour
14.1
14.0
12.9
17.5
0.343
Metabolic syndrome (%)
 
 
 
 
 
  Yes
30.9
28.0
32.9
28.7
0.956
Calorie intake (%)
 
 
 
 
 
  1st (≤1519.0kcal)
31.5
33.6
26.1
11.6
< 0.001
  2nd (1519.0-1877.0kcal)
26.8
28.8
23.3
21.9
0.098
  3rd (1877.0-2296.9kcal)
22.8
20.8
26.9
28.3
0.068
  4th (>2296.9kcal)
18.8
16.8
23.7
38.2
< 0.001
Vitamin C intake (%)
 
 
 
 
 
  1st (≤56.0mg/d)
24.2
26.8
22.5
25.9
1.000
  2nd (56.0-82.0mg/d)
24.2
24.8
24.9
25.9
0.697
  3rd (82.0-121.5mg/d)
31.5
22.4
25.3
23.5
0.224
  4th (>121.5mg/d)
20.1
26.0
27.3
24.7
0.408
Zinc intake (%)
 
 
 
 
 
  1st (≤5.8mg/d)
24.8
25.2
25.3
24.3
0.884
  2nd (5.8-7.3mg/d)
22.8
28.0
23.7
24.3
0.826
  3rd (7.3-9.2mg/d)
24.2
24.8
26.5
24.7
0.846
  4th (>9.2mg/d) 28.2 22.0 24.5 26.7 0.865

a Drinkers were categorized into tertiles.

b Analysis of variance for continuous variables or logistic regression for categorical variables.

c Medians and interquartile range are presented in parentheses.