Table 3 ORs (and 95% CIs) of being overweight or obese according to alcohol-related variables.

From: Roles of drinking and diet in the U-shaped relationship between smoking and BMI in middle-aged and elderly Chinese rural adults

Drinking behavior parameters

Overweight or obese, n = 5182 (%)

Underweight or normal, n = 5655 (%)

Crude OR (95% CI)

p value

Adjusted OR (95% CI)a

p value

Alcohol units consumed per day

Non-drinker

4109 (79.3%)

4801 (84.9%)

1.00 (referent)

–

1.00 (referent)

–

< 4

207 (4.0%)

170 (3.0%)

1.42 (1.16–1.75)

0.001

1.56 (1.25–1.93)

< 0.001

4–

545 (10.5%)

438 (7.7%)

1.45 (1.27–1.66)

< 0.001

1.69 (1.46–1.96)

< 0.001

8–

321 (6.2%)

246 (4.4%)

1.53 (1.29–1.81)

< 0.001

1.76 (1.45–2.13)

< 0.001

p value for trend

  

< 0.001

 

< 0.001

 

Duration of drinking (years)

Non-drinker

4109 (79.3%)

4801 (84.9%)

1.00 (referent)

–

1.00 (referent)

–

< 20

327 (6.3%)

311 (5.5%)

1.23 (1.05–1.44)

0.012

1.36 (1.14–1.61)

< 0.001

20–

536 (10.3%)

386 (6.8%)

1.62 (1.41–1.86)

< 0.001

1.86 (1.60–2.17)

< 0.001

35–

210 (4.1%)

157 (2.8%)

1.56 (1.27–1.93)

< 0.001

1.97 (1.57–2.48)

< 0.001

p value for trend

  

< 0.001

 

< 0.001

 

Age at starting drinking (years)

Non-drinker

4109 (79.3%)

4801 (84.9%)

1.00 (referent)

–

1.00 (referent)

–

25–

766 (14.8%)

669 (11.8%)

1.34 (1.20–1.50)

< 0.001

1.54 (1.36–1.75)

< 0.001

20–

184 (3.5%)

127 (2.3%)

1.69 (1.35–2.13)

< 0.001

1.93 (1.51–2.46)

< 0.001

< 20

123 (2.4%)

58 (1.0%)

2.48 (1.81–3.40)

< 0.001

2.81 (2.02–3.90)

< 0.001

p value for trend

  

< 0.001

 

0.001

 

Cumulative amount of drinking (unit-years)

Non-drinker

4109 (79.3%)

4801 (84.9%)

1.00 (referent)

–

1.00 (referent)

–

< 40

177 (3.4%)

155 (2.7%)

1.33 (1.07–1.66)

0.010

1.43 (1.14–1.80)

0.002

40–

163 (3.1%)

144 (2.5%)

1.32 (1.05–1.66)

0.016

1.52 (1.19–1.93)

0.001

80–

159 (3.1%)

133 (2.4%)

1.40 (1.11–1.77)

0.005

1.59 (1.24–2.04)

< 0.001

120–

574 (11.1%)

422 (7.5%)

1.59 (1.39–1.81)

< 0.001

1.89 (1.62–2.20)

< 0.001

p value for trend

  

< 0.001

 

< 0.001

 

Liquor

1042 (20.1%)

820 (14.5%)

1.48 (1.34–1.64)

< 0.001

1.70 (1.51–1.92)

< 0.001

Beer

162 (3.1%)

120 (2.1%)

1.49 (1.17–1.89)

0.001

1.48 (1.15–1.89)

0.002

Wine

19 (0.4%)

14 (0.2%)

1.48 (0.74–2.96)

0.264

1.54 (0.76–3.12)

0.231

  1. aAdjusted for gender, age, education level, annual income, number of cigarettes per day and consumptions of total vegetables, fresh fruits and meats
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