Table 1.

Summary Statistics

	Non-Black				Black
	Females		Males		Females		Males
	Higher- Income	Lower- Income	Higher- Income	Lower- Income	Higher- Income	Lower- Income	Higher- Income	Lower- Income
Mean Income	67.950	18.331	65.929	18.148	60.556	15.675	59.982	15.681
SD Income	62.893	8.242	60.926	8.516	46.739	8.449	51.148	8.360
Mean Peer Lower Income	0.323	0.479	0.322	0.475	0.439	0.561	0.464	0.561
SD Mean Peer Lower Income	0.192	0.208	0.187	0.207	0.194	0.199	0.200	0.198
N (Predictors)	3566	2078	3764	2098	703	964	665	855
Mean Obesity W1	0.055	0.087	0.122	0.141	0.131	0.137	0.123	0.128
Mean Obesity W2	0.087	0.139	0.147	0.176	0.159	0.178	0.151	0.159
Mean Obesity W3	0.178	0.257	0.194	0.223	0.272	0.323	0.204	0.226
Mean Obesity W4	0.289	0.402	0.334	0.401	0.465	0.520	0.359	0.341
Mean Obesity W5	0.327	0.454	0.352	0.457	0.553	0.603	0.398	0.420
N (Obese W1)	3460	1999	3734	2064	687	901	659	834
N (Obese W2)	2607	1536	2708	1531	527	653	469	605
N (Obese W3)	2725	1458	2620	1412	508	681	441	540
N (Obese W4)	2899	1645	2840	1502	578	760	476	574
N (Obese W5)	2584	1333	2264	1061	445	610	322	333

Notes: Initial summary statistics for Wave 1 predictors by race, gender, and adolescent family income status, as well as obesity statistics for Waves 1 – 5.

Source: Authors’ calculations from Add Health Data Waves 1 – 5.