TABLE 3

Demographic and Enrollment Characteristics of the Gold Standard Sample (n = 679) and the Overall WA-Medicaid Population Between 2009 and 2011 (n = 829 012)

CharacteristicGold Standard Sample a Overall Medicaid Population b
Age as of December 31, 2010
 <1 y c 54 (8%)47 718 (6%)
 1–4 y c 257 (38%)205 469 (25%)
 5–9 y c 146 (22%)217 360 (26%)
 10–14 y c 119 (17%)191 674 (23%)
 15–19 y c 103 (15%)166 791 (20%)
Male gender d 361 (53%)416 628 (50%)
Race/ethnicity
 White c 252 (37%)413 784 (50%)
 Hispanic145 (21%)201 025 (24%)
 Other/mixed c 170 (25%)139 792 (17%)
 African American c 89 (13%)48 399 (6%)
 Asian23 (3%)26 032 (3%)
Written language
 English c 497 (73%)651 207 (79%)
 Other c 182 (27%)177 805 (21%)
Coverage for majority of eligibility months
 Fee-for-service c 318 (47%)169 708 (20%)
 Managed care c 361 (53%)659 304 (80%)
Months of medical assistance eligibility 2009–2011
 <12 mo c 17 (3%)43 707 (5%)
 13–24 mo c 125 (18%)185 536 (22%)
 25–35 mo c 158 (23%)219 559 (27%)
 36 mo c 379 (56%)380 210 (46%)
PMCA more conservative approach designation
 C-CD e 329 (47%)51 851 (6%)
 NC-CD e 100 (14%)134 764 (16%)
 Without CD e 249 (36%)608 966 (74%)
 Not classifiable e 1 (0%)33 431 (4%)
  • Data are presented as n (%).

  • a Demographic data were available for 679 children and claims data for 678, resulting in different n values for the text and table.

  • b We used 3 years of claims data from 2009 to 2011 for children aged <19 years on July 1, 2010, with a minimum eligibility of 1 month in 2010 and 2 months in 2009–2011.

  • c Statistically significant based on the confidence interval for a proportion applied to the gold standard sample.

  • d Two children had missing gender data.

  • e Statistical tests were not performed because we deliberately oversampled children with C-CD for the gold standard population.