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. 2017 Mar 10;7(3):e014201. doi: 10.1136/bmjopen-2016-014201

Table 3.

Adjusted ORs for the prevalence and incidence of high-to-very high levels of psychological distress (K10*≥22 vs K10*<22) by baseline fruit and vegetable consumption and stratified by sex

  Cross-sectional analysis
Male
Female
Unadjusted OR (95% CI) p Value Age-adjusted OR (95% CI) p Value Fully adjusted OR† (95% CI) p Value Unadjusted OR (95% CI) p Value Age-adjusted OR (95% CI) p Value Fully adjusted OR† (95% CI) p Value
Tertiles  
Fruit  
 0 to 1 serve/day 1.0 (reference) 1.0 (reference) 1.0 (reference) 1.0 (reference) 1.0 (reference) 1.0 (reference)
 >1 to 2 serves/day 0.69 (0.59 to 0.79) <0.001 0.71 (0.61 to 0.82) <0.001 0.78 (0.67 to 0.91) 0.002 0.59 (0.52 to 0.66) <0.001 0.61 (0.54 to 0.69) <0.001 0.67 (0.59 to 0.77) <0.001
 >2 serves/day 0.80 (0.69 to 0.93) 0.003 0.83 (0.72 to 0.96) 0.02 0.99 (0.84 to 1.17) 0.95 0.61 (0.54 to 0.68) <0.001 0.65 (0.57 to 0.73) <0.001 0.79 (0.69 to 0.91) 0.001
Vegetables  
 0 to 2 serves/day 1.0 (reference) 1.0 (reference) 1.0 (reference) 1.0 (reference) 1.0 (reference) 1.0 (reference)
 >2 to 4 serves/day 0.70 (0.61 to 0.80) <0.001 0.71 (0.62 to 0.82) <0.001 0.80 (0.69 to 0.93) 0.004 0.66 (0.59 to 0.75) <0.001 0.68 (0.60 to 0.77) <0.001 0.80 (0.70 to 0.92) 0.001
 >4 serves/day 0.82 (0.71 to 0.95) 0.007 0.88 (0.76 to 1.01) 0.07 0.91 (0.78 to 1.06) 0.23 0.64 (0.57 to 0.72) <0.001 0.68 (0.60 to 0.77) <0.001 0.80 (0.70 to 0.92) 0.001
Fruit and vegetables  
 0 to 4 serves/day 1.0 (reference) 1.0 (reference) 1.0 (reference) 1.0 (reference) 1.0 (reference) 1.0 (reference)
 >4 to 7 serves/day 0.80 (0.70 to 0.91) 0.001 0.82 (0.72 to 0.94) 0.003 0.92 (0.80 to 1.07) 0.28 0.60 (0.53 to 0.67) <0.001 0.62 (0.55 to 0.70) <0.001 0.73 (0.64 to 0.83) <0.001
 >7 serves/day 0.79 (0.67 to 0.93) 0.004 0.84 (0.72 to 0.99) 0.04 0.91 (0.76 to 1.09) 0.30 0.57 (0.50 to 0.65) <0.001 0.61 (0.54 to 0.70) <0.001 0.75 (0.65 to 0.87) <0.001
  Longitudinal analysis‡
Male
Female
Unadjusted OR (95% CI) p Value Age-adjusted OR (95% CI) p Value Fully adjusted OR† (95% CI) p Value Unadjusted OR (95% CI) p Value Age-adjusted OR (95% CI) p Value Fully adjusted OR† (95% CI) p Value
Tertiles  
Fruit  
 0 to 1 serve/day 1.0 (reference) 1.0 (reference) 1.0 (reference) 1.0 (reference) 1.0 (reference) 1.0 (reference)
 >1 to 2 serves/day 0.87 (0.74 to 1.02) 0.09 0.87 (0.74 to 1.02) 0.09 0.95 (0.80 to 1.13) 0.56 0.72 (0.62 to 0.83) <0.001 0.72 (0.62 to 0.84) <0.001 0.84 (0.71 to 1.0) 0.04
 >2 serves/day 0.90 (0.75 to 1.06) 0.21 0.89 (0.75 to, 1.06) 0.20 0.98 (0.81 to 1.19) 0.85 0.68 (0.58 to 0.80) <0.001 0.69 (0.59 to 0.81) <0.001 0.84 (0.70 to 1.0) 0.06
Vegetables  
 0 to 2 serves/day 1.0 (reference) 1.0 (reference) 1.0 (reference) 1.0 (reference) 1.0 (reference) 1.0 (reference)
 >2 to 4 serves/day 0.86 (0.73 to 1.0) 0.05 0.85 (0.73 to 1.0) 0.05 0.94 (0.79 to 1.11) 0.45 0.67 (0.57 to 0.78) <0.001 0.67 (0.57 to 0.78) <0.001 0.82 (0.69 to 0.98) 0.03
 >4 serves/day 0.96 (0.81 to 1.13) 0.59 0.95 (0.81 to 1.12) 0.55 0.94 (0.78 to 1.13) 0.51 0.75 (0.65 to 0.87) <0.001 0.76 (0.65 to 0.88) <0.001 0.89 (0.75 to 1.05) 0.17
Fruit and vegetables  
 0 to 4 serves/day 1.0 (reference) 1.0 (reference) 1.0 (reference) 1.0 (reference) 1.0 (reference) 1.0 (reference)
 >4 to 7 serves/day 0.88 (0.76 to 1.03) 0.11 0.88 (0.76 to 1.03) 0.11 0.98 (0.83 to 1.16) 0.82 0.63 (0.55 to 0.73) <0.001 0.64 (0.55 to 0.74) <0.001 0.77 (0.65 to 0.91) 0.002
 >7 serves/day 0.96 (0.80 to 1.14) 0.62 0.95 (0.79 to 1.14) 0.57 0.94 (0.77 to 1.15) 0.52 0.71 (0.61 to 0.83) <0.001 0.72 (0.62 to 0.84) <0.001 0.86 (0.72 to 1.02) 0.09

*The total K10 score is based on a 10-item questionnaire about anxiety and depression symptoms experienced in the past 4 weeks.24 Possible K10 scores range from 10 to 50 with scores ≥22 indicating high-to-very-high levels of psychological distress.

†Adjusted for baseline age, sex, highest education level, marital status, household annual income, body mass index category, smoking status, alcoholic intake, physical activity levels and a history of chronic disease.

§Participants who reported having been recently treated for depression/anxiety and/or taking antidepressant medication and/or with a K10 score ≥22 (n=6067) at baseline were excluded from longitudinal analyses.

K10, Kessler Psychological Distress Scale.