. 2023 Mar 3;102(1):202–222. doi: 10.1093/sf/soad025

Table 4.

Average Marginal Effects on Friendship Retention of Dyad/Ego Characteristics in PROSPER

	Model 1 AME [CI]	Model 2 AME [CI]	Model 3 AME [CI]	Model 4 AME [CI]	Model 5 AME [CI]
Different race	−0.049^***	−0.029^***	−0.024^**	−0.022^**	−0.011
	[−0.066, −0.032]	[−0.043, −0.014]	[−0.039, −0.008]	[−0.038, −0.007]	[−0.027, 0.004]
Ego’s race: Hispanic	−0.027^**	−0.009	−0.006	−0.008	−0.006
	[−0.047, −0.008]	[−0.026, 0.007]	[−0.023, 0.012]	[−0.025, 0.009]	[−0.023, 0.011]
Ego’s race: Black	−0.007	0.001	0.005	0.004	−0.002
	[−0.037, 0.024]	[−0.024, 0.027]	[−0.022, 0.032]	[−0.022, 0.031]	[−0.028, 0.024]
Time period
Wave 2–3	−0.174^***	−0.182^***	−0.180^***	−0.183^***	−0.201^***
	[−0.196, −0.153]	[−0.202, −0.162]	[−0.201, −0.159]	[−0.208, −0.157]	[−0.224, −0.177]
Wave 3–4	−0.165^***	−0.185^***	−0.184^***	−0.192^***	−0.214^***
	[−0.185, −0.144]	[−0.204, −0.165]	[−0.204, −0.164]	[−0.218, −0.167]	[−0.238, −0.190]
Wave 4–5	−0.156^***	−0.158^***	−0.159^***	−0.170^***	−0.206^***
	[−0.176, −0.135]	[−0.178, −0.138]	[−0.179, −0.138]	[−0.195, −0.145]	[−0.230, −0.182]
Duration		0.350^***	0.344^***	0.341^***	0.279^***
		[0.331, 0.369]	[0.325, 0.364]	[0.305, 0.378]	[0.252, 0.305]
Merge		−0.051^**	−0.057^**	−0.067^***	−0.075^***
		[−0.084, −0.018]	[−0.091, −0.022]	[−0.102, −0.033]	[−0.110, −0.040]
Same gender			0.044^***	0.045^***	0.015
			[0.026, 0.063]	[0.026, 0.064]	[−0.005, 0.035]
GPA difference			−0.016^***	−0.015^***	−0.006
			[−0.025, −0.008]	[−0.024, −0.007]	[−0.014, 0.003]
Same SES			0.027^***	0.027^***	0.018^**
			[0.014, 0.039]	[0.014, 0.040]	[0.005, 0.030]
Racial heterogeneity				0.505^***	0.339^***
				[0.326, 0.685]	[0.179, 0.499]
Outdegree					0.027^***
					[0.023, 0.031]
Mutual friendship					0.108^***
					[0.092, 0.124]
N of shared friends					0.010^***
					[0.007, 0.013]
Observations	18,868	18,868	17,872	17,872	17,872

Note: SES = socioeconomic status.

^** p < .01.

^*** p < .001.