Skip to main content

Advertisement

Table 2 Cross-sectional associations between sleep duration categories and FV intakes of women from the UKWCS

From: Recommended sleep duration is associated with higher consumption of fruits and vegetables; cross-sectional and prospective analyses from the UK Women’s Cohort Study

Short sleepers (≤6 h/d) and Long sleepers (≥9 h/d) compared to the recommended group (7–9 h/d)
Models Model 1 Model 2
Sleep categories ≤ 6 h/d sleep Mean difference (95% CI) P value ≥9 h/d sleep Mean difference (95% CI) P value n Overall P value* ≤6 h/d sleep Mean difference (95% CI) P value ≥9 h/d sleep Mean difference (95% CI) P value n Overall P value*
Fruits and vegetables (grams/day)a
 Fruits -8 (− 18,0.8) 0.07 -18 (−28, − 8) < 0.001 11,972 < 0.001 -5 (− 15, 4) 0.2 − 15 (− 25, − 5) 0.003 11,571 0.009
 Vegetables − 10 (− 17,-3) 0.003 − 12 (− 19,-4) 0.001 12,148 < 0.001 −8 (− 15,-1) 0.01 −11 (− 18, − 3) 0.003 11,738 0.001
 Total FV −23 (− 36,-10) < 0.001 − 30 (− 43, − 17) < 0.001 12,159 < 0.001 −17 (− 30,-4) 0.01 − 25 (− 39, − 12) < 0.001 11,749 < 0.001
Fruits and vegetables (servings/week)b
 Fruits − 0.7 (− 1, − 0.3) 0.001 −1 (− 1, − 0.6) < 0.001 13,623 < 0.001 − 0.4 (− 0.8,-0.02) 0.04 −1 (− 1, − 0.5) < 0.001 13,127 < 0.001
 Vegetables − 0.4 (− 0.8, − 0.01) 0.04 − 0.4 (− 0.8, − 0.01) 0.05 13,660 0.03 − 0.3 (− 0.7, 0.1) 0.1 −0.3 (− 0.8, 0.07) 0.1 13,164 0.1
 Total FV −1 (− 1, − 0.5) 0.001 −1 (− 2, − 0.9) < 0.001 13,760 < 0.001 −0.7 (− 1,-0.08) 0.02 −1 (− 2, − 0.6) < 0.001 13,260 < 0.001
Fruit and vegetable biomarkers
 Vitamin C (μg/ml) −3 (− 6,-1) 0.003 2 (− 0.03,4) 0.05 149 0.001 −4 (−6,-1) 0.003 1 (− 0.4,4) 0.1 145 0.001
 α-carotene (nmol/l) −86 (− 191,19) 0.1 −54 (−144,36) 0.2 149 0.1 −104 (− 219, 9) 0.07 −51 (− 150,47) 0.3 145 0.1
 β-carotene (nmol/l) − 120 (− 542, 302) 0.5 177 (− 181,536) 0.3 149 0.5 −120 (− 580,340) 0.6 118 (− 278, 515) 0.5 145 0.7
 Lycopene (nmol/l) −56 (− 223,111) 0.5 113 (− 29,255) 0.1 148 0.2 −83 (− 254, 86) 0.3 107 (− 39,254) 0.1 144 0.1
  1. Model 1 adjusted for age
  2. Model 2 adjusted for age, socio-economic status, smoking, ethnicity and total energy intake
  3. CI confidence interval, d day, FV fruits and vegetables, G gram, h hours, n number
  4. *P value for differences between sleep duration categories
  5. aobtained from 4-day food diary
  6. bobtained from health and lifestyle questionnaire