Table 2

Odds Ratios for low mental well-being (14–42), as compared to middle-range mental well-being (43–59), across lifestyle variables

Model 1 Unadjusted OR (95% CI)Model 2 Partially adjusted OR (95% CI)Model 3 Fully adjusted OR (95% CI)P value for significant onesP value for linear trendP for interaction with sex
Body Mass Index (kg/m2)
18.5 kg/m2 to 25 kg/m2RefRefRef
<18.5 kg/m21.87 (1.30–2.69)1.82 (1.26–2.61)1.46 (0.95–2.24)0.0000.334
25 kg/m2 to <30 kg/m20.92 (0.82–1.05)0.97 (0.85–1.09)1.03 (0.89–1.18)
30 kg/m2 to <40 kg/m21.25 (1.10–1.43)1.31 (1.14–1.50)1.24 (1.04–1.43)0.012
40+ kg/m22.25 (1.73–2.93)2.28 (1.75–2.97)1.72 (1.26–2.36)0.001
Alcohol drinking
Never drinkerRefRefRef0.246
≤4 /day/men or ≤3 /day/women0.59 (0.52–0.66)0.59 (0.52–0.67)0.78 (0.66–0.91)0.0020.777
>4 and ≤8/men or >3 and ≤6/women0.65 (0.57–0.75)0.66 (0.57–0.76)0.82 (0.69–0.99)0.043
>8 /day/men or >6 /day women0.78 (0.68–0.89)0.79 (0.69–0.91)0.87 (0.73–1.04)
Ex-Drinker1.55 (1.28–1.87)1.55 (1.29–1.87)1.22 (0.93–1.59)
Smoking
Never SmokingRefRefRef0.0000.866
Light Smoker <10/day1.67 (1.40–1.99)1.70 (1.43–2.03)1.45 (1.15–1.80)0.001
Moderate Smoker 10 to <20/day2.06 (1.76–2.41)2.08 (1.78–2.44)1.56 (1.27–1.92)<0.001
Heavy Smoker >20/day3.16 (2.62–3.81)3.21 (2.67–3.87)1.98 (1.55–2.53)<0.001
Ex-Smoker1.16 (1.04–1.30)1.16 (1.04–1.30)1.15 (0.99–1.32)
Fruit and vegetable intake
5 or more portions/dayRefRefRef0.0000.028
3 to <5 portions /day1.09 (0.96–1.25)1.09 (0.96–1.25)0.97 (0.82–1.14)
1 to <3 portions/day1.61 (1.42–1.83)1.64 (1.44–1.86)1.11 (0.94–1.31)
<1 portion/day1.29 (1.94–2.70)2.35 (1.99–2.78)1.53 (1.24–1.90)0.000
  • Model 1: unadjusted; Model 2: adjusted for age and sex; Model 3: fully adjusted for sociodemographic variables (age, sex, marital status, education, employment status, equivalised household income, ethnicity) and lifestyle variables (BMI, smoking, alcohol drinking and fruit and vegetable consumption).