Table 1.

Descriptive Statistics and Bivariate Relations for Primary Study Variables

Variable	1	2	3	4	5	6	7	8	9
1. Cortisol morning level	--	.49***	.16	.52***	.83***	.04	.04	−.18	−.13
2. Cortisol diurnal Δ		--	−.60***	.97***	.05	−.03	.09	−.26†	.01
3. Cortisol nocturnal Δ			--	−.71***	.68***	−.09	−.04	.09	−.04
4. Blunted pattern PC				--	.00	.03	.07	−.24†	−.02
5. Steep pattern PC					--	−.02	.02	−.09	−.11
6. Overprotection						--	.31*	.16	.31*
7. Critical Control							--	.05	.10
8. Time 2 Sleep Problems								--	.49***
9. Time 3 Sleep Problems									--
Mean (SD)	0.83 (0.09)	−0.02 (0.01)	0.32 (0.31)	0.00 (1.00)	0.00 – 1.00	1.12 (0.30)	0.29 (0.26)	0.43 (0.48)	0.43 (0.36)
Range	0.66 – 1.21	−0.04 – 0.01	−0.37 – 1.05	−1.73 – 2.65	−1.91 – 3.47	0.33 – 1.83	0.00 – 1.17	0.00 – 2.00	0.00 – 1.40

Note. Descriptive and bivariate statistics were computed after multiple imputation of missing values. Cortisol morning level and cortisol diurnal Δ represent Empirical Bayes estimates of intercepts and slopes, respectively, from multilevel modeling analyses. Cortisol nocturnal Δ represents the difference between Day 2 morning and Day 1 evening values (Day 2 morning – Day 1 evening). PC = principal component. n= 51 except for statistics involving cortisol morning level, diurnal change, blunted pattern, and steep pattern (n = 50).

^†p < .10,

^*p < .05,

^***p < .001.