TABLE 1

Characteristics of Children With Nephrolithiasis Who Underwent Diagnostic Imaging in the United States from 2003 to 2011

Total Pediatric Population in MarketScan (N = 17 827 229)Children With Nephrolithiasis Who Underwent Imaging (N = 9228)
Median age, y (IQR)10 (6–14)15 (12–17)
Gender, n (%)
 Male9 111 328 (51.1)3834 (41.5)
 Female8 715 901 (48.9)5394 (58.5)
Plan type, n (%)
 POS1 578 897 (8.9)976 (10.6)
 CDHP/HDHP863 370 (4.8)418 (4.5)
 PPO11 749 236 (65.9)6302 (68.3)
 EPO217 788 (1.2)118 (1.3)
 HMO3 417 938 (19.2)1414 (15.3)
  • CDHP, consumer-driven health plan; EPO, exclusive provider organization; HDHP, high-deductible health plan; HMO, health maintenance organization; IQR, interquartile range; POS, point of service; PPO, preferred provider organization.