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Table 2 Basic characteristics of the study subjects according to the categorized amount of alcohol intake

From: Frequent alcohol drinking is associated with lower prevalence of self-reported common cold: a retrospective study

 

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

  1. a Drinkers were categorized into tertiles.
  2. b Analysis of variance for continuous variables or logistic regression for categorical variables.
  3. c Medians and interquartile range are presented in parentheses.