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. Author manuscript; available in PMC: 2023 Apr 1.
Published in final edited form as: Med Care. 2022 Apr 1;60(4):279–286. doi: 10.1097/MLR.0000000000001698

Table 4.

Comparison of true versus claims-derived†† measures when both sources indicated that out-of-network inpatient coinsurance was required

Carve-in plan-years Carve-out plan-years
%
Total
Among plans on row:
Mean Difference (SD)
%
Total
Among plans on row:
Mean Difference (SD)
Out-of-Network Inpatient Coinsurance N=623 N=315
Plan-year value derived from the minimum value observed in claims
   Derived < true 89 −28 ( 12) 90 −25 (13)
   Derived = true 10 0 (0) 10 0 (0)
   Derived > true 1 13 (13) 0 NA
 Plan-year value derived from the 25th percentile value observed in claims
   Derived < true 89 −27 (12) 90 −24 (13)
   Derived = true 10 0 (0) 10 0 (0)
   Derived > true 1 13 (13) 0 NA
 Plan-year value derived from the 50th percentile value observed in claims
   Derived < true 87 −22 (10) 88 −20 (12)
   Derived = true 12 0 (0) 12 0 (0)
   Derived > true 1 11 (12) 0 NA
 Plan-year value derived from the 75th percentile value observed in claims
   Derived < true 75 −18 (11) 79 −16 (11)
   Derived = true 23 0 (0) 21 0 (0)
   Derived > true 23 14 (10) 0.3 18 (0)
 Plan-year value derived from the maximum value observed in claims
   Derived < true 67 −18 (11) 72 −16 (11)
   Derived = true 30 0 (0) 28 0 (0)
   Derived > true 3 15 (9) 0.3 18 (0)
  Out-of-Network Outpatient Professional Coinsurance N=2092 N=2043
Plan-year value derived from the minimum value observed in claims
  Derived < true 97 −37 (8) 85 −36 (9)
  Derived = true 3 0 (0) 16 0 (0)
  Derived > true 0.2 32 (33) 0.05 5 (0)
Plan-year value derived from the 25th percentile value observed in claims
  Derived < true 82 −36 (10) 70 −35 (11)
  Derived = true 18 0 (0) 30 0 (0)
  Derived > true 0.4 24 (25) 0.05 5 (0)
Plan-year value derived from the 50th percentile value observed in claims
  Derived < true 48 −35 (12) 38 −34 (12)
  Derived = true 51 0 (0) 62 0 (0)
  Derived > true 1 20 (17) 0.05 5 (0)
Plan-year value derived from the 75th percentile value observed in claims
  Derived < true 24 −33 (13) 16 −32 (13)
  Derived = true 75 0 (0) 84 0 (0)
  Derived > true 2 18 (14) 0.2 4 (2)
Plan-year value derived from the maximum value observed in claims
  Derived < true 5 −16 (10) 3 −19 (10)
  Derived = true 87 0 (0) 96 0 (0)
  Derived > true 9 21 (14) 0.8 12 (16)

SD: Standard deviation; OON: Out-of-network

†:

True measures are drawn from an insurer’s claims processing engine database, and reflect the values present in the “Description of Benefits” documents issued by the insurer.

††:

Claims-derived measures are based on expenditures from coinsurance in specialty mental health claims data.