Table 4.

Connectivity Results for 5 Largest Add Health Networks by Sample Size

			Bias a				SE b
Net ID	Statistic	True Value	10% Sample	25% Sample	50% Sample	75% Sample	10% Sample	25% Sample	50% Sample	75% Sample
16	Component	1570	−1.042	−2.245	−1.097	−.896	16.263	9.209	5.734	3.696
17	Component	1707	5.813	.765	1.439	−2.039	21.993	16.013	8.516	5.625
18	Component	1745	−.360	.181	−.937	.060	18.768	10.245	8.319	4.723
19	Component	1894	−1.061	.772	.572	.769	14.633	9.308	6.015	4.002
20	Component	1954	−9.903	−10.846	−.193	−1.608	50.711	26.636	17.323	13.457
16	Bicomponent	1517	.769	−6.641	−4.453	−3.506	24.894	20.319	9.944	6.421
17	Bicomponent	1594	15.735	−3.531	−2.865	−1.842	32.292	27.695	11.580	8.363
18	Bicomponent	1648	8.945	7.374	5.150	3.216	38.663	20.124	11.688	6.835
19	Bicomponent	1838	−3.634	1.543	1.485	2.047	22.986	17.441	11.029	5.881
20	Bicomponent	1664	10.920	16.564	25.134	18.619	76.119	34.949	26.401	16.470
16	Distance	4.253	−.155	−.163	−.194	−.186	.094	.058	.039	.033
17	Distance	5.038	−.034	−.067	−.073	−.066	.154	.098	.076	.073
18	Distance	4.751	−.226	−.264	−.286	−.264	.142	.088	.054	.049
19	Distance	4.302	−.133	−.143	−.147	−.146	.076	.041	.034	.029
20	Distance	5.497	−.175	−.212	−.225	−.204	.201	.103	.068	.062
16	5 Step Reachability	.881	.041	.043	.049	.048	.024	.016	.019	.008
17	5 Step Reachability	.591	.030	.035	.036	.032	.051	.033	.026	.024
18	5 Step Reachability	.720	.090	.104	.110	.104	.050	.027	.018	.015
19	5 Step Reachability	.882	.032	.037	.038	.038	.019	.012	.009	.006
20	5 Step Reachability	.393	.039	.047	.055	.048	.063	.033	.021	.018

Note: The values for Bias and SE are calculated over 30 independent samples, where each sample yields one estimate of the network measure. All estimates come from the ENC model.

^aBias=E(estimates)−True Value.

^bThe Standard Error is the standard deviation of the sampling distribution.