Table 3 Ordered logistic regression models associating BMI-z quartile (dependent variable) and average 24-h sleep duration (Model 1) and nocturnal time-in-bed (Model 2)
From: Sleep and BMI in South African urban and rural, high and low-income preschool children
| Model 1 | Model 2 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| OR | 95% CI | p-value | OR | 95% CI | p-value | ||||||
| Ave 24-h sleep duration | 0.42 | 0.23, 0.78 | 0.006 | Ave nocturnal time-in-bed | 0.45 | 0.26, 0.79 | 0.005 | ||||
| Covariates | Sex: Boy v girl | 0.61 | 0.36, 1.03 | 0.066 | Covariates | Sex: Boy v girl | 0.57 | 0.33, 0.97 | 0.037 | ||
| Age | 0.78 | 0.51, 1.20 | 0.261 | Age | 0.72 | 0.46, 1.13 | 0.153 | ||||
| Group: | UL v UH | 2.91 | 1.15, 7.40 | 0.025 | Group: | UL v UH | 2.48 | 0.96, 6.38 | 0.060 | ||
| RL v UH | 1.14 | 0.48, 2.69 | 0.773 | RL v UH | 1.15 | 0.49 2.73 | 0.747 | ||||
| Sedentary Behaviour | 0.99 | 0.98, 1.00 | 0.009 | Sedentary Behaviour | 0.99 | 0.98, 1.00 | 0.018 | ||||
| LMVPA | 0.99 | 0.98, 1.00 | 0.128 | LMVPA | 1.00 | 0.99, 1.00 | 0.254 | ||||
| Model: n = 198, LR chi2 = 31.14, p < 0.001 | Model: n = 198, LR chi2=31.62, p < 0.001 | ||||||||||