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Table 1 General characteristics of women from the UKWCS according to sleep duration category

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

Characteristics ≤6 h/day (SS) Sleep Categories 7-9 h/day (RS) ≥ 9 h/day (LS) Total
Observations (n) 1403 11,292 1230 13,925
  Mean (95% CI) Mean (95% CI) Mean (95% CI) Mean (95% CI)
Age (years) 55 (54,55) 51 (51,52) 54 (53,54) 52 (52,53)
BMI (kg/m2) 24.7 (24.5,24.9) 24.0 (23.9,24.1) 24.8 (24.6,25.1) 24.1 (24.1,24.2)
Fruit (g/d) 229 (220,238) 235 (232, 238) 217 (208,226) 232 (229,234)
Vegetables (g/d) 209 (202,215) 222 (219,224) 208 (202, 215) 218 (216,220)
Total fruits and vegetables (g/d) 430 (417,442) 451 (447,455) 421 (409,433) 445 (441,448)
Total energy intake (kcal/d) 2329 (2289,2368) 2371 (2359,2384) 2331 (2293,2368) 2362 (2351,2374)
  % (95%CI) % (95%CI) % (95%CI) % (95%CI)
Alcohol consumption frequency (once a week or more) 39 (37,42) 47 (46,48) 37 (34,40) 46 (45, 46)
Has longstanding illness (yes) 33 (31,36) 25 (24,25) 29 (27,32) 26 (25,27)
Taking prescribed medicine (yes) 40 (37,42) 29 (28, 30) 40 (37,43) 31 (30, 32)
Smoking (yes) 10 (9,12) 8 (7,8) 8 (6, 9) 8 (7, 8)
Vitamins, minerals, food supplements (yes) 63 (61,66) 59 (58, 60) 57 (54,60) 60 (59, 61)
Vegetarian or vegan(yes) 33 (30,36) 32 (31, 33) 28 (25,31) 32 (31, 33)
Ethnicity (white) 98 (97, 98) 98 (98, 99) 99 (98,99) 99 (98, 99)
Employer (employed) 47 (45,50) 62 (61,63) 45 (43,48) 59 (58,60)
Socio-economic status (professional) 21 (19,23) 28 (27,29) 26 (24,29) 28 (27,28)
Physical activity (light/moderate) 49 (46,52) 49 (48,50) 56 (53,59) 50 (48,50)
Marital status (married or living as married) 68 (65,70) 77 (76, 78) 77 (75,80) 76 (75,77)
Number of children (2 children) 48 (45, 51) 51 (50,52) 50 (47,53) 50 (49, 51)
  1. BMI body mass index, CI Confidence interval, d day, g gram, kg kilogram, LS long sleepers, m metre, n number, RS recommended sleepers, SS short sleepers