Table 2.

Results of the Cross-Sectional Exponential Random Graph Models of Friendship at Time 1

Effect	Model 1		Model 2
	Estimate (standard error)	Odds ratio	Estimate (standard error)	Odds ratio
Friendship probability	−5.69 (0.13)	0.003	−6.06 (0.17)	0.002
Friendship skew	−1.60 (0.04)	0.20	−1.59 (0.05)	0.20
Homophily
Gender	0.78 (0.01)	2.18	0.77 (0.02)	2.16
Race	0.58 (0.05)	1.79	0.58 (0.05)	1.79
Grade	2.18 (0.06)	8.85	2.35 (0.15)	10.49
SES	0.18 (0.01)	1.20	0.16 (0.01)	1.17
GPA	0.66 (0.03)	1.93	0.60 (0.06)	1.82
Problem behavior	1.02 (0.06)	2.77	0.78 (0.06)	2.18
Physical health	0.36 (0.04)	1.43	0.08 (0.04)a	1.08
Depression	0.12 (0.02)	1.13	0.36 (0.04)	1.43
Network Structure
Open triads	−0.34 (0.01)	0.71	−0.36 (0.02)	0.70
Closed triads	1.24 (0.03)	3.46	1.21 (0.03)	3.35
Activity co-participation	------------b	------b	0.81 (0.03)	2.25

Note. Effects are significant at p < .001 unless otherwise noted.

^aSignificant at p < .01.

^bEffect not included in the model