Observational Study
Copyright ©The Author(s) 2024.
World J Clin Cases. Jan 6, 2024; 12(1): 86-94
Published online Jan 6, 2024. doi: 10.12998/wjcc.v12.i1.86
Table 3 Comparison of sleep rhythm in age, gender and body mass index (n = 13374)
CharacteristicSleep rhythm
P value
ITs
MTs
ETs
Age (years), mean ± SD15.23 (1.433)14.94 (1.461)15.19 (1.403)0.000
BMI (kg/m2), mean ± SD23.41 (7.022)23.46 (7.160)23.81 (7.504)0.000
Sex0.005
Boy, n (%)5403 (80.1)460 (6.8)882 (13.1)
Girl, n (%)5454 (82.3)412 (6.2)763 (11.5)
Sum, n (%)10857 (81.2)872 (6.5)1674 (12.3)