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Table 1 Demographics, time-use, and dietary intake for those with sleep loss (n = 83)

From: Losing sleep influences dietary intake in children: a longitudinal compositional analysis of a randomised crossover trial

Variable

Descriptive statistic

Age, mean SD years

10.2 (1.4)

Sex, n (%) female

44 (53.0)

BMI z-score, mean (SD)

0.74 (1.18)

Weight statusa, n (%)

 Normal weight

51 (61.5)

 Overweight

18 (21.7)

 Obese

14 (16.9)

Ethnicity, n (%)

 New Zealand European

61 (73.5)

 Māori

13 (15.7)

 Others

9 (10.8)

Area-level deprivationb, n (%)

 High (NZDep 8–10)

15 (18.1)

 Medium (NZDep 4–7)

33 (39.8)

 Low (NZDep 1–3)

35 (42.2)

Maternal education, n (%)

 Secondary school

21 (25.3)

 Post-secondary education

18 (21.7)

 University degree

40 (48.2)

Time-use in extension week, geometric mean (95% CI) minutes

 Sleep

556 (548, 565)

 Sedentary

507 (492, 522)

 LPA

280 (270, 290)

 MVPA

56 (51, 60)

 WASO

16 (13, 21)

Changes in time-use from extension week to restriction week, mean (SD) minutes

 Sleep

-47.9 (30.1)

 Sedentary

31.3 (43.7)

 LPA

20.8 (31.6)

 MVPA

4.2 (14.4)

 WASO

-8.5 (21.4)

Dietary intake in extension week, mean (SD)

 Energy intake, kJ

8449 (1454)

 Fat intake, g

74.1 (14.4)

 Protein intake, g

69.1 (15.5)

 Carbohydrate intake, g

257.5 (46.0)

 Total sugar intake, g

108.6 (24.8)

 Energy intake after 5 pm, kJ

3145 (1158)

 UPF, kJ

5731 (1987)

 Core foods, kJ

4408 (1808)

 Non-core foods, kJ

4960 (2071)

  1. LPA light physical activity, MVPA moderate-to-vigorous physical activity, WASO wake after sleep onset, UPF ultra-processed foods
  2. aCategories based on the WHO BMI z-score cut-offs; children with underweight <  = -2SD, normal weight > -2SD to + 1SD, overweight >  + 1SD to + 2SD, obesity >  + 2SD
  3. bUses the New Zealand Index of Deprivation 2018 which reflects the extent of material and social deprivation and is used to construct deciles from 1 (least deprived) to 10 (most deprived)