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. Author manuscript; available in PMC: 2020 Dec 1.
Published in final edited form as: Med Care. 2019 Dec;57(12):e80–e86. doi: 10.1097/MLR.0000000000001134

Table 4:

Case-mix adjusted CG-CAHPS scores for continuous sampling relative to 12-month periodic sampling

Recency of last visit
N 12-month Periodic Sample (Unweighted) [Sample A] Simulated Continuous Sample, Weighted by Visit Frequency, Projected to Mean 1.5 Months Recency [Sample B]1 Adjusted difference [Sample B - Sample A] 95% Confidence Interval [Sample B – Sample A] p-value2 Physician- level SD3 Difference [Sample B – Sample A] in physician-level SDs Percentile misranking Sample B, Sample A when true score is near 50th percentile
Global rating of doctor 28,799 90.17 92.88 2.70 (2.46, 2.94) <0.001 6.04 0.45 17%
Patient experience composites
Doctor communication 29,002 91.10 93.32 2.22 (1.92, 2.52) <0.001 5.96 0.37 15%
Access to care 28,770 63.10 65.97 2.88 (2.54, 3.21) <0.001 12.72 0.23 9%
Coordination of care 28,747 83.23 85.74 2.51 (2.21, 2.81) <0.001 7.35 0.34 13%
Office staff 28,831 86.13 88.26 2.13 (1.83, 2.44) <0.001 5.41 0.39 15%

Note: Below, “residuals” refers to residuals from a model that predicts the CAHPS measure from year, patient gender, case-mix adjustors (patient age, education, and self-rated general and mental health), and physician effects

1

Grand mean plus visit-frequency-weighted mean of residuals, plus regression-based projection to a mean visit recency of 1.5 months, controlling for visit frequency and case-mix

2

p-value for test of association between residuals and visit frequency weights, adjusted for additional uncertainty from regression-based projection to mean visit recency of 1.5 months

3

Standard deviation (SD) of physician-level case-mix adjusted scores, not adjusted for visit recency or frequency