Table 3. Adjusted difference in type 2 diabetes risk markers per hour increase in sleep.

% difference in metabolic risk marker per 1 hr increase in sleep (95% confidence interval); P-value
Model	Insulin		Insulin resistance		Glucose		HbA1c
1	-2.22 (-3.77, -0.65)	0.006	-2.16 (-3.70, -0.60)	0.007	-0.21 (-0.42, -0.01)	0.04	-0.01 (-0.01, 0.00)	0.14
2	-1.49 (-2.89, -0.07)	0.04	-2.16 (-3.70, -0.60)	0.007	-0.22 (-0.42, -0.01)	0.04	0.00 (0.00, 0.00)	0.31
3	-1.09 (-2.52, 0.37)	0.14	-1.04 (-2.47, 0.41)	0.16	-0.19 (-0.39, 0.02)	0.08	-0.01 (-0.01, 0.00)	0.20
4	-1.15 (-2.54, 0.26)	0.11	-1.04 (-2.47, 0.41)	0.16	-0.20 (-0.41, 0.00)	0.05	-0.01 (-0.01, 0.00)	0.14

Model 1 includes adjustment for sex, age quartiles, month, ethnicity, social position, anthropometric observer, height and random effect for school

Model 2 as in Model 1 plus fat mass index

Model 3 as in Model 1 plus fat free mass index

Model 4 as in Model 1 plus fat mass index and fat free mass index

Insulin and insulin resistance missing data for 76 children