TABLE 3

Sensitivity and Specificity for PMCA Version 2.0 in WA-Medicaid Administrative Data by Duration of Eligibility and Type of Coverage

Duration of EligibilityC-CDNC-CDWithout CD
Sensitivity, %Specificity, %Sensitivity, %Specificity, %Sensitivity, %Specificity, %
Overall Medicaid eligibility
 25–36 mo (n = 270)76a85a63a85a87a91a
 13–24 mo (n = 17)67b86b57b80b86b90b
 5–12 mo (n = 8)50b67b25b75b100b83b
 1–4 mo (n = 4)0b33b0b50b100b100b
Fee–for–service Medicaid coverage
 25–36 mo (n = 36)85a75a55b88b100b97b
 13–24 mo (n = 9)80b100b50b86b100b86b
 5–12 mo (n = 68)81a67a44b89b100b89b
 1–4 mo (n = 104)64a84a66a82a82a91a
Managed care Medicaid coverage
 25–36 mo (n = 221)73a86a64a85a86a89a
 13–24 mo (n = 27)73b88b67b78b86b95b
 5–12 mo (n = 16)80b55b13b88b100b85b
 1–4 mo (n = 3)50b0b0b50bN/AN/A
  • N/A, not applicable, because all 3 children were classified as C-CD or NC-CD.

  • a Indicates >20 children.

  • b Indicates <20 children, suggesting estimates are unstable.