Table 6.

Summary of multivariate logistic regression model predicting obesity and overweight in 2010 vs. 2014.

		Variables	β	Wald	Sig.	OR a (95% CI)
2010	Overweight	Sleep duration (h)
		<7 h	0.258	7.559	0.006	1.294 (1.077–1.555)
		≥7 to 8 h	0.230	6.638	0.010	1.259 (1.057–1.500)
		≥8 to 9 h	0.161	3.385	0.066	1.174 (0.990–1.393)
		≥9 h (reference)	0 b
		Gender
		Boys	0.521	95.809	0.000	1.683 (1.516–1.868)
		Girls (reference)	0 b
		Age group (Year)
		7–12	0.354	21.065	0.000	1.425 (1.225–1.658)
		13–15	0.162	5.351	0.021	1.176 (1.025–1.349)
		16–18	0 b
	Obesity	Sleep duration (h)
		<7 h	0.145	1.586	0.208	1.157 (0.922–1.450)
		≥7 to 8 h	0.088	0.674	0.411	1.092 (0.885–1.348)
		≥8 to 9 h	0.109	1.165	0.280	1.115 (0.915–1.360)
		≥9 h (reference)	0 b
		Gender
		Boys	0.650	87.112	0.000	1.916 (1.671–2.196)
		Girls (reference)	0 b
		Age group (Year)
		7–12	1.038	94.820	0.000	2.823 (2.291–3.478)
		13–15	0.513	24.812	0.000	1.671 (1.365–2.045)
		16–18	0 b
2014	Overweight	Sleep duration (h)
		<7 h	0.340	14.142	0.000	1.405 (1.177–1.677)
		≥7 to 8 h	0.235	6.826	0.009	1.265 (1.060–1.509)
		≥8 to 9 h	0.225	6.268	0.012	1.253 (1.050–1.495)
		≥9 h (Reference)	0 b
		Gender
		Boys	0.633	147.862	0.000	1.883 (1.700–2.085)
		Girls (Reference)	0 b
		Age group (Year)
		7–12	0.388	28.503	0.000	1.474 (1.278–1.699)
		13–15	0.138	3.934	0.047	1.148 (1.002–1.316)
		16–18	0 b
	Obesity	Sleep duration (h)
		<7 h	0.268	8.632	0.003	1.308 (1.093–1.564)
		≥7 to 8 h	0.078	0.734	0.391	1.081 (0.904–1.293)
		≥8 to 9 h	0.164	3.425	0.064	1.178 (0.990–1.401)
		≥9 h (Reference)	0 b
		Gender
		Boys	0.670	140.860	0.000	1.953 (1.749–2.182)
		Girls (Reference)	0 b
		Age group (Year)
		7–12	0.999	144.096	0.000	2.714 (2.306–3.195)
		13–15	0.394	21.951	0.000	1.483 (1.258–1.749)
		16–18	0 b

^a Adjustment odds ratio (OR); ^b as a reference.