TABLE 1.

Descriptive Statistics for All Analytic Variables

	Girls (N = 7,082)			Boys (N = 6,861)
Individual-level Variables	M or Proportion	SD	% Missing	M or Proportion	SD
Outcomes
Depression	0.66	0.40		0.55	0.33
Self-esteem	3.93	0.55		4.15	0.52
Fighting	0.21			0.42
Course failure	0.44			0.57
Independent variables
Romantic attraction
Other-sex attraction	0.87			0.83
Same-sex attraction	0.06			0.07
No attraction	0.08			0.10
Race/ethnicity
White	0.65			0.65
Latino/a	0.11			0.12
Black	0.16			0.15
Asian	0.05			0.05
Other	0.03			0.03
Parents' education	2.78	1.12	2.13	2.79	1.14
Age	16.68	1.29		16.84	1.36
Family structure
Single parent	0.23			0.22
Stepparent	0.17			0.17
Relationship with parents	3.42	0.58	2.73	3.50	0.50
Pubertal development
Younger	0.19			0.21
Older	0.41			0.40

School-level Variables (n = 73)	M or Proportion	SD	Min	Max
School size
Small	0.16
Medium	0.37
Large	0.47
School region
West	0.19
Midwest	0.23
South	0.38
Northeast	0.19
Urbanicity
Urban	0.29
Rural	0.19
Suburban	0.52
School religiosity (unstandardized)	2.65	0.46	1.51	3.90
Prevalence of football (unstandardized)	0.39	0.16	0.00	0.78
Proportion sexual minority	0.06	0.03	0.01	0.14

SOURCE: National Longitudinal Study of Adolescent Health.

NOTE: Descriptive statistics for individual-level variables are weighted.