TABLE 2.

Socioeconomic Status and Urban Location Differences by Race^* for Teenagers and Young Adults With Muscular Dystrophy in South Carolina 2000–2010

	All		Whites		Blacks		Other Race		Blacks vs. Other Race		Blacks vs. Whites		Whites vs. Other Race
Variables	Mean	SEM	Mean	SEM	Mean	SEM	Mean	SEM	P	|t|-stat	P	|t|-stat	P	|t|-stat
Ages 15–18 (y)
Received food stamps	0.10	0.00	0.06	0.00	0.20	0.00	0.09	0.00	0.02	2.40	0.00	3.56	0.36	0.92
High school graduate†	0.71	0.00	0.68	0.00	0.75	0.00	0.74	0.00	0.90	0.13	0.17	1.38	0.25	1.15
Urban	0.81	0.00	0.82	0.00	0.76	0.00	0.87	0.00	0.05	1.98	0.26	1.13	0.22	1.22
N	503		276		123		104
Ages 19–24 (y)
Received food stamps	0.01	0.00	0.01	0.00	0.01	0.00	0.03	0.00	0.55	0.60	0.93	0.09	0.51	0.66
High school graduate	0.76	0.00	0.78	0.00	0.70	0.00	0.74	0.01	0.63	0.48	0.10	1.63	0.59	0.54
Urban	0.81	0.00	0.79	0.00	0.81	0.00	0.92	0.01	0.04	2.04	0.76	0.30	0.01	2.71
N	508		361		108		39

On this table, mean value for per person annual counts of each encounter type and standard errors for these means (SEM) are reported. P-values are given for the differences between mean utilization levels of each encounter type across racial groups as specified.

^*According to 2000 census 68% of SC population identify their race as white and 29.9% as black. Remaining 2.1% consists of American Indian or Alaska Natives (0.7%), Asians (1.1%), Native Hawaiian or Other Pacific Islanders (0.1%), and some other races (1.3%). In 2010 Census, share of whites is 67.6% and blacks are 28.8%. Asians increase to 1.6% and American Indians and Alaska Natives to 0.9%. Native Hawaiian and Other Pacific Islander share did not change and remaining 2.8% consists of variety of other races with smaller shares.

^†Data is collected on the “last grade enrolled.” Thus, we cannot be sure that they actually completed high school. Conditional on enrollment into 12th grade, graduation probability is high, although South Carolina has one of the highest high school dropout rates.