Table 2.
Summary Statistics for HEDIS and CAHPS Measures
| HEDIS/CAHPS Measure | 1998 (%) | 1999 (%) | 2000 (%) | 2001 (%) | 2002 (%) | Average Number of Plans Reporting | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | Mean | SD | Mean | SD | Mean | SD | ||
| CAHPS health plan rating | 57.60 | 8.63 | 57.01 | 8.63 | 59.44 | 8.02 | 61.89 | 7.85 | 61.27 | 8.11 | 259 |
| CAHPS health care rating | 70.21 | 6.04 | 70.21 | 6.21 | 71.99 | 6.09 | 73.19 | 5.72 | 75.17 | 5.57 | 322 |
| CAHPS physician rating | 71.74 | 5.06 | 72.76 | 4.65 | 74.25 | 4.55 | 74.62 | 4.50 | 75.01 | 3.99 | 322 |
| Comprehensive diabetes care—hemoglobin A1c screening rate | 73.19 | 13.26 | 75.04 | 10.83 | 78.44 | 9.83 | 81.43 | 7.64 | 82.67 | 9.38 | 271 |
| Comprehensive diabetes care—annual eye exam rate | 41.82 | 15.30 | 45.30 | 15.13 | 48.36 | 13.87 | 52.15 | 13.38 | 51.85 | 13.34 | 270 |
| Comprehensive diabetes care—lipid screening rate | 61.49 | 12.44 | 69.27 | 10.93 | 76.72 | 9.16 | 81.49 | 6.71 | 85.26 | 8.37 | 270 |
| Comprehensive diabetes care—nephropathy monitoring rate | 29.87 | 14.00 | 36.09 | 14.28 | 41.40 | 13.73 | 46.10 | 13.21 | 51.81 | 12.09 | 268 |
| β-blocker medication after heart attack | 80.36 | 11.87 | 85.21 | 10.82 | 89.65 | 8.70 | 92.75 | 6.21 | 93.76 | 7.98 | 221 |
| LDL cholesterol screening rate | 59.28 | 17.62 | 68.95 | 11.46 | 74.16 | 9.26 | 77.05 | 8.06 | 79.46 | 7.38 | 259 |
CAHPS, Consumer Assessment of Health Plans Survey; HEDIS, Healthcare Effectiveness Data and Information Set; β-blocker, Betablocker; LDL, low-density lipoprotein; SD, standard deviation.