Table 1.

SC Medicaid Sample Population Characteristics.

Characteristics	2004	2006	2008	2010	2012	2014
Medicaid enrollment characteristics
Age 1st enrolled	3.4	2.5	1.7	1.4	1.4	1.4
Years enrolled	7.7	8.8	9.1	8.8	7.9	6.9
Months enrolled in year	10.2	9.9	9.7	10.2	10.1	11.0
Family net income
Monthly income, if >0 $2015	902.7	1,016.9	1,113.9	1,168.3	1,314.9	1,551.2
Missing, %	5.7%	7.1%	7.2%	5.8%	4.6%	2.6%
Zero, %	31.0%	49.1%	34.3%	32.7%	41.4%	47.2%
Demographics
Male	52.4%	51.4%	50.8%	50.2%	50.1%	50.2%
Age	6.9	6.7	6.4	6.7	7.2	7.5
Race: White	40.2%	39.6%	39.1%	40.2%	41.0%	41.5%
Black	52.3%	50.8%	49.0%	47.1%	46.5%	45.8%
Hispanic	5.3%	7.3%	9.4%	9.8%	9.3%	9.4%
N obs.	222,091	221,764	226,781	261,412	299,608	328,512
Birth certificate data
Birth weight, g	3192	3183	3180	3181	3182	3185
Mother’s age	23.6	23.7	23.7	23.9	24.2	24.5
School: Elem	5.3%	5.7%	6.1%	5.8%	5.2%	4.9%
High school	29.7%	30.4%	30.5%	29.4%	28.1%	26.5%
High school diploma	42.6%	40.7%	39.3%	38.4%	37.4%	36.2%
Some college	15.4%	16.6%	17.7%	19.1%	21.0%	22.9%
College diploma	7.0%	6.6%	6.4%	7.2%	8.2%	9.5%
N obs.	138,810	157,108	177,561	210,582	238,745	257,381

Notes: The table is based on a 60% random sample of SC Medicaid population under 17 years old in 2004–2015, excluding children in foster care and disabled children. Birth certificates data are available for in-state births for children born after 1992. These records are matched to Medicaid records on name, date of birth, race, gender, and hospital of birth, when available. Years enrolled referes to years in the sample if they are enrolled in a given year while months enrolled refers to the current year.