Table 6: Multinomial Logit: Weight Category Estimates by Age and Gender.

Multinomial Logit: Weight Category Estimates by Age and Gender
-		Male			Female
-		Ages 12-20			Ages 12-20
-		Model Fit
Criterion		Intercept Only	Intercept and Covariates		Intercept Only	Intercept and Covariates
AIC		6342.626	5102.27		5765.216	4810.782
-2 Log L		6336.63	5000.27		5759.216	4708.782
-		Chi-Square	Pr > ChiSq		Chi-Square	Pr > ChiSq
Likelihood Ratio		1050.4337	<.0001		-	-
Results
Variable		Estimate	Std Err	Pr > ChiSq	Estimate	Std Err	Pr > ChiSq
Intercept	Under	-3.8352	2.9542	1.6855	0.9407	2.02	0.2169
	Over	-4.6207***	0.9344	24.4537	-6.3905***	1.0861	34.6191
	Obese	-10.3903***	1.3802	56.6693	-23.6786	241.7	0.0096
Aget	Under	-0.0114	0.0108	1.1136	-0.00874	0.00758	1.3282
	Over	0.0148***	0.00326	20.5721	0.0112***	0.00349	10.2212
	Obese	0.0208***	0.00447	21.5431	0.0242***	0.00433	31.1976
Black	Under	0.4746	0.3818	1.5454	-1.4563***	0.338	18.5639
	Over	0.1905	0.1307	2.1257	0.757***	0.1448	27.3139
	Obese	0.547**	0.1814	9.0958	1.5201***	0.1683	81.6024
Hispanic	Under	0.3611	0.5165	0.4886	-1.4062*	0.4174	11.3506
	Over	0.0847	0.1391	0.3704	-0.0621	0.1496	0.1721
	Obese	0.0334	0.1865	0.0321	0.379**	0.175	4.6901
Household Sizet	Under	-0.227**	0.1066	4.5317	-0.0138	0.066	0.0439
	Over	-0.0337	0.0301	1.2532	0.00961	0.0326	0.0868
	Obese	0.0616	0.04	2.3661	0.06	0.0388	2.3921
Poverty/Income Ratiot	Under	0.084	0.1438	0.3411	-0.0962	0.0947	1.0305
	Over	0.0287	0.0442	0.422	-0.0682	0.0463	2.1713
	Obese	0.067	0.0622	1.1594	-0.0807	0.0568	2.0151
Urbant	Under	-1.1057***	0.31	12.7182	0.3978	0.3036	1.7163
	Over	-0.2033*	0.1133	3.2206	-0.1793	0.1261	2.0202
	Obese	-0.3479*	0.156	4.973	-0.1645	0.1572	1.0957
Northeastt	Under	0.00662	0.5521	0.0001	-0.0703	0.3231	0.0473
	Over	0.1209	0.1357	0.7942	0.1994	0.1543	1.67
	Obese	-0.3531	0.2031	3.0226	-0.0454	0.206	0.0486
Southt	Under	0.7253	0.3577	4.1117	0.1936	0.2589	0.5588
	Over	-0.0977	0.1082	0.8159	0.00591	0.1196	0.0024
	Obese	0.1007	0.1447	0.485	0.2083	0.143	2.1232
Age Sext	Under	0.2521***	0.0794	10.0765	0.0678	0.0661	1.0523
	Over	-0.0497***	0.0205	5.9106	-0.0332	0.0273	1.4847
	Obese	-0.0617***	0.0284	4.7014	-0.0851**	0.0319	7.1124
General Healtht	Under	0.1116	0.1669	0.447	0.1748	0.1214	2.0737
	Over	0.0673	0.055	1.4992	0.2647***	0.0584	20.5614
	Obese	0.2767***	0.0732	14.2925	0.6545***	0.0683	91.8812
Years Smokingt	Under	0.1623	0.1073	2.288	-0.1924**	0.0908	4.4894
	Over	-0.1278***	0.0322	15.7156	-0.0888**	0.0369	5.785
	Obese	-0.2951***	0.0461	40.9897	0.0275	0.043	0.4083
Stay Same Weightt	Under	-2.7077***	0.6036	20.1261	-2.1557***	0.2708	63.3712
	Over	1.3328***	0.1214	120.5813	1.4004***	0.4812	8.4689
	Obese	3.3359***	0.5165	41.7145	13.0705	241.7	0.0029
Lose Weightt	Under	-1.9159***	0.7355	6.785	-4.1514***	0.3909	112.7952
	Over	2.7017***	0.1363	392.8267	3.1936***	0.4706	46.057
	Obese	6.047***	0.514	138.4273	16.0169	241.7	0.0044
Eating Disordert	Under	0.5649	0.6712	0.7084	0.6163*	0.3611	2.9131
	Over	-0.3835	0.2963	1.6754	-0.6031**	0.2518	5.737
	Obese	-0.3346	0.4197	0.6354	0.1904	0.2381	0.6393
Mother's Education Less than HSt	Under	0.2867	0.4071	0.4959	0.2031	0.3554	0.3266
	Over	0.1784	0.1365	1.7078	0.32**	0.161	3.9476
	Obese	0.5073***	0.1857	7.4638	0.6169*	0.1831	11.3557
Mother's Education HSt	Under	-0.2784*	0.3646	0.583	0.1659	0.2624	0.4001
	Over	0.0418	0.1077	0.1507	0.3781***	0.1163	10.5709
	Obese	0.3534*	0.1484	5.6705	0.2704**	0.1445	3.5047
-		Ages 21-32			Ages 2132
-		Model Fit
Criterion		Intercept Only	Intercept and Covariates		Intercept Only	Intercept and Covariates
AIC		13930.1	10868.6		13090.505	10643.3
-2 Log L		13924.1	10766.6		13084.505	10541.3
-		Chi-Square	Pr > ChiSq		Chi-Square	Pr > ChiSq
Likelihood Ratio		3157.5016	<.0001		2543.1765	<.0001
Results
Variable		Estimate	Std Err	Pr > ChiSq	Chi-Square	-	Pr > ChiSq
Intercept	Under	-4.7046*	2.4852	3.5836	-2.1641	1.7735	1.4889
	Over	-3.6836***	0.5554	43.9922	-7.0743***	0.6726	110.6288
	Obese	-8.8757***	0.7326	146.7752	-9.1216***	0.861	112.2483
Aget	Under	0.00031	0.00683	0.0021	0.000947	0.00464	0.0417
	Over	0.00569***	0.00148	14.8516	0.00609***	0.00149	16.7313
	Obese	0.0119***	0.00178	44.5584	0.0063***	0.00162	15.1989
Black	Under	-0.5226	0.422	1.5338	-1.2774***	0.3186	16.0758
	Over	0.4099***	0.0983	17.3809	1.001***	0.1063	88.6017
	Obese	0.6889***	0.1211	32.3716	1.4663***	0.1114	173.2655
Hispanic	Under	-0.5491	0.5182	1.1226	-0.3487	0.3581	0.9479
	Over	0.4018***	0.1004	16.0021	0.1093	0.1001	1.1933
	Obese	0.2496**	0.1223	4.1634	0.0453	0.1084	0.1747
Household Sizet	Under	0.0316	0.1083	0.0854	0.0479	0.0708	0.4587
	Over	0.042*	0.0242	3.0137	0.0727**	0.0251	8.3979
	Obese	0.0917***	0.0285	10.3734	0.1389***	0.0262	28.1078
Poverty/Income Ratiot	Under	-0.0738	0.158	0.2182	0.1178	0.1064	1.2247
	Over	0.1058***	0.0367	8.3129	-0.101***	0.0388	6.7868
	Obese	0.056	0.0454	1.5211	-0.1586***	0.0419	14.3262
Urbant	Under	-0.0983	0.3466	0.0804	0.1953	0.2822	0.4791
	Over	-0.0829	0.0845	0.9621	0.092	0.0878	1.0989
	Obese	-0.258*	0.1045	6.099	0.023	0.0951	0.0585
Northeastt	Under	-12.3565	154.8	0.0064	-0.2392	0.3242	0.5443
	Over	-0.0794	0.1053	0.568	0.00136	0.1043	0.0002
	Obese	0.0701	0.1273	0.3034	-0.1765	0.1177	2.2479
Southt	Under	-0.1582	0.3331	0.2257	0.0621	0.2529	0.0603
	Over	-0.2435**	0.079	9.5065	0.0958	0.0816	1.3786
	Obese	-0.2477**	0.0968	6.5407	0.1637*	0.0881	3.4513
Age Sext	Under	0.1281*	0.0663	3.7357	0.0609	0.0544	1.2514
	Over	-0.0347***	0.0136	6.481	0.0273	0.0167	2.6697
	Obese	-0.0585***	0.0165	12.5977	-0.0272	0.0176	2.3817
General Healtht	Under	0.3624*	0.1721	4.4342	0.0178	0.1157	0.0237
	Over	0.1187***	0.0413	8.248	0.2682***	0.0421	40.5659
	Obese	0.5829***	0.0498	136.8514	0.715***	0.045	252.0977
Years Smokingt	Under	-0.1237*	0.0574	4.6461	-0.0667	0.0412	2.6252
	Over	-0.041***	0.0115	12.6499	0.0213*	0.0127	2.8208
	Obese	-0.0954***	0.0141	45.5112	0.033***	0.0137	5.7993
Stay Same Weightt	Under	-2.8231***	0.6061	21.694	-3.3665***	0.2943	130.8794
	Over	1.5282***	0.0952	257.4656	1.925***	0.3583	28.8596
	Obese	3.0937***	0.2918	112.3833	2.6788***	0.6054	19.5819
Lose Weightt	Under	-2.7625***	1.0201	7.3328	-4.9968***	0.4073	150.5402
	Over	3.0787***	0.1097	787.6142	3.8651***	0.3538	119.3175
	Obese	6.087***	0.2932	430.9459	5.7169***	0.5966	91.8367
Eating Disordert	Under	-1.1278	1.0384	1.1796	1.0863***	0.3419	10.0953
	Over	-0.032	0.1637	0.0382	-0.255*	0.154	2.7406
	Obese	-0.4061*	0.2084	3.7967	-0.2312	0.1627	2.0192
Mother's Education Less than HSt	Under	0.7915**	0.4057	3.8061	-0.7077*	0.3631	3.7977
	Over	0.5222***	0.1067	23.9636	0.2091*	0.1123	3.4669
	Obese	0.5441***	0.1313	17.1747	0.5909***	0.1151	26.337
Mother's Education HSt	Under	-0.3318	0.395	0.7056	-0.1701	0.2577	0.4358
	Over	0.1274	0.0783	2.645	0.3247***	0.081	16.0598
	Obese	0.3706***	0.0954	15.1043	0.1873**	0.0897	4.3664
Dependent Variable: Weight Category (underweight, normal weight, overweight, obese)
Reference group: Normal Weight
Source: NLSY 1997
Statistical Significance: * (0.10), ** (0.05), *** (0.01)