. Author manuscript; available in PMC: 2022 Nov 1.

Published in final edited form as: Obesity (Silver Spring). 2021 Nov;29(11):1760–1769. doi: 10.1002/oby.23281

Table 4.

Zero-Order Correlations for All Study Variables and Covariates

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20
1. Age	-
2. Pubertal Status	.79^**	-
3. Sex	.12	.16.	-
4. Race	.11	.08.	.11	-
5. Height	.80^**	.77^**	−.04	.03	-
6. Depressive Symptoms^a	−.02	−.06.	.05	.08	−.05	-
7. Socioeconomic Status	−.10	−.05.	−.07	.32^**	−.14	.12	-
8. Snoring	−.03	.01.	−.11	.14	.10	−.06	.09	-
9. Baseline Fat Mass (kg)^a	.42^**	.37^**	.34^**	.18^*	.40^**	−.02	.02	.11	-
10. 1-Year Fat Mass (kg)^a	.37^**	.35^**	.34^**	.16	.34^**	.01	.02	.13	.95^**	-
11. BMIz Score	.04	.12.	.10	.31^**	.10	−.05	.20^*	.19^*	.79^**	.77^**	-
12. Season	−.13	−.17.	−.02	.14	−.11	.08	.13	.10	.01	−.02	.09	-
13. Average Weekly Sleep Duration (hr)	−.39^**	−.32^**	−.02	−.11	−.30^**	−.14	−.12	−.08	−.18^*	−.18^*	−.11	.21^*	-
14. Weekend Catch-Up Sleep (hr)	.27^**	.21^*	.16	.02	.25^**	−.01	−.09	−.02	.15	.12	.05	−.03	−.20^*	-
15. Within-Subject Sleep Duration Variability^a	.41^**	.40^**	.12	.27^**	.31^**	.00	.16	−.02	.22^*	.21^*	.15	−.12	−.37^**	.39^**	-
16. Bedtime Shift	.07	.11.	−.04	.13	.05	−.01	.25^**	−.02	.06	.03	.10	−.09	−.24^**	−.13	.10	-
17. Waketime Shift	.26^**	.23^**	.10	.08	.24^**	−.03	.11	.01	.13	.11	.05	−.17	−.42^**	.73^**	.40^**	.41^**	-
18. Social Jet Lag (hr)	.12	.19^*	.02	.14	.15	.05	.26^**	.03	.14	.09	.15	−.18^*	−.34^**	.18^*	.23^**	.61^**	.60^**	-
19. Bedtime^b	.42^**	.39^**	.00	.33^**	.45^**	.07	.07	.13	.25^**	.18^*	.15	−.01	−.49^**	.23^**	.58^**	.07	.26^**	.13	-
20. Waketime^c	.23^**	.18^*	−.08	.23^**	.29^**	.03	−.02	.10	.10	.03	.03	.20^*	.11	.11	.41^**	−.13	−.03	−.18^*	.74^**	-
21. Sleep Midpoint^c	.35^**	.33^**	−.05	.29^**	.42^**	.10	.07	.14	.20^*	.12	.12	.10	−.24^**	.19^*	.57^**	−.04	.13	.10	.91^**	.89^**

Note: Three participants had missing data for socioeconomic status and 3 different participants had missing data for pubertal status. Sex: 0= male, 1= female; Puberty: 1= no puberty development, 2= early-to-mid puberty development, 3= late puberty development; Race: 0 = Other; 1 = Non-Hispanic Black or African American; Snoring: 0 = no snoring, 1 = snoring present; Season: 1= winter, 2= spring, 3= summer, 4= fall.

Log-transformed values presented.

Times presented as fraction from noon.

Times presented as fraction from midnight.

p<.5

^**

p<.01