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Table 1 Basic characteristics of the study subjects according to the categorized frequency of alcohol intake

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

 

Frequency of alcohol intake (day/week)

P for trenda

 

0

≤3

4-6

7

 
 

(n = 149)

(n = 294)

(n = 169)

(n = 287)

 

Age (year)b

45.0 (38.0–55.0)

41.5 (36.0–52.3)

48.0 (38.0–55.0)

51.0 (42.0–57.0)

< 0.001

Education (%)

     

  ≥12 years

35.6

59.5

53.3

38.7

0.135

Occupation (%)

     

  Non office work

11.4

24.1

23.1

20.2

0.234

Smoking status (%)

     

  Never smoker

39.6

39.1

40.2

27.2

0.003

  Ex smoker

9.4

15.6

11.2

12.2

0.976

  Current smoker

51.0

45.2

48.5

60.6

0.004

BMI (kg/m2)b

23.8 (21.6–26.1)

23.8 (21.7–26.0)

23.6 (22.1–25.5)

22.8 (20.9–25.0)

< 0.001

Physical activity (%)

     

  ≥10min/day

71.1

81.6

78.7

80.1

0.166

Depressive symptoms (%)

     

  SDS ≥45

36.9

28.2

29.6

32.4

0.759

Sleep duration (%)

     

  <7 hour

53.7

54.4

53.3

37.3

< 0.001

  7-8 hour

32.2

33.3

33.7

44.3

0.005

  ≥8 hour

14.1

12.2

13.0

18.5

0.089

Metabolic syndrome (%)

     

  Yes

30.9

32.3

30.2

27.2

0.247

Calorie intake (%)

     

  1st (≤1519.0kcal)

31.5

28.9

23.7

18.5

0.001

  2nd (1519.0-1877.0kcal)

26.8

28.2

21.3

23.0

0.146

  3rd (1877.0-2296.9kcal)

22.8

23.1

21.9

29.6

0.078

  4th (>2296.9kcal)

18.8

19.7

33.1

28.9

0.001

Vitamin C intake (%)

     

  1st (≤56.0mg/d)

24.2

22.1

24.3

28.6

0.139

  2nd (56.0-82.0mg/d)

24.2

23.5

24.3

27.5

0.313

  3rd (82.0-121.5mg/d)

31.5

25.2

26.0

20.9

0.026

  4th (>121.5mg/d)

20.1

29.3

25.4

23.0

0.796

Zinc intake (%)

     

  1st (≤5.8mg/d)

24.8

22.8

23.1

28.2

0.259

  2nd (5.8-7.3mg/d)

22.8

28.2

23.7

23.3

0.572

  3rd (7.3-9.2mg/d)

24.2

24.8

24.9

26.1

0.639

  4th (>9.2mg/d)

28.2

24.1

28.4

22.3

0.302

  1. a Analysis of variance for continuous variables or logistic regression for categorical variable.
  2. b Medians and interquartile range in parentheses.