Table 3.
Average Lengths of Stay, Corrected for Age, Sex, Race, and Severity of Illness, 95 Percent Confidence Intervals for the Average per Hospital, ICC, and Variance Components per DRG for 1999, 2000, and 2001
| 1999 | 2000 | 2001 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DRG | Diagnosis/Procedure | Average (SE) | Hospital (95% CI) | ICC | Variance (Components) | Average (SE) | Hospital (95% CI) | ICC | Variance (Components) | Average (SE) | Hospital (95% CI) | ICC | Variance (Components) |
| 88 | Chronic obstructive pulmonary disease | 6.01 (0.08) | 3.66–8.36 | 0.09 | 1.44 (0.15)* | 5.48 (0.06) | 3.69–7.26 | 0.08 | 0.83 (0.09)* | 5.37 (0.07) | 3.49–7.24 | 0.09 | 0.92 (0.10)* |
| 1.09 (0.07)† | 0.69 (0.04)† | 0.74 (0.05)† | |||||||||||
| 13.85 (0.11)‡ | 8.77 (0.07)‡ | 8.84 (0.07)‡ | |||||||||||
| 127 | Congestive heart failure | 5.78 (0.06) | 4.04–7.53 | 0.06 | 0.79 (0.08) | 5.65 (0.06) | 3.91–7.39 | 0.06 | 0.79 (0.08) | 5.63 (0.06) | 3.89–7.38 | 0.06 | 0.79 (0.09) |
| 0.77 (0.04) | 0.85 (0.04)) | 0.86 (0.04) | |||||||||||
| 11.91 (0.07) | 10.82 (0.07 | 11.36 (0.07) | |||||||||||
| 209 | Major joint procedures | 6.42 (0.10) | 3.96–8.88 | 0.23 | 1.57 (0.18) | 6.13 (0.08) | 3.97–8.28 | 0.21 | 1.21 (0.14) | 5.80 (0.08) | 3.75–7.86 | 0.22 | 1.10 (0.13) |
| 0.65 (0.04) | 0.59 (0.04) | 0.53 (0.04) | |||||||||||
| 4.60 (0.04) | 3.92 (0.03) | 3.42 (0.03) | |||||||||||
| 358 | Hysterectomy with complications | 4.12 (0.04) | 3.32–4.91 | 0.04 | 0.17 (0.03) | 3.83 (0.04) | 3.13–4.53 | 0.05 | 0.13 (0.02) | 3.74 (0.05) | 2.73–4.75 | 0.10 | 0.27 (0.04) |
| 0.34 (0.04) | 0.24 (0.03) | 0.23 (0.03) | |||||||||||
| 3.36 (0.06) | 2.20 (0.04) | 2.26 (0.04) | |||||||||||
| 359 | Hysterectomy without complications | 2.90 (0.02) | 2.34–3.46 | 0.09 | 0.08 (0.01) | 2.82 (0.02) | 2.30–3.33 | 0.08 | 0.07 (0.01) | 2.75 (0.02) | 2.17–3.34 | 0.10 | 0.09 (0.01) |
| 0.16 (0.01) | 0.14 (0.01) | 0.14 (0.01) | |||||||||||
| 0.69 (0.01) | 0.67 (0.01) | 0.67 (0.01) | |||||||||||
| 370 | Cesarean section with complications | 4.62 (0.04) | 3.87–5.38 | 0.04 | 0.15 (0.03) | 4.53 (0.04) | 3.69–5.36 | 0.06 | 0.18 (0.03) | 4.43 (0.05) | 3.44–5.42 | 0.08 | 0.25 (0.04) |
| 0.06 (0.02) | 0.07 (0.02) | 0.05 (0.02) | |||||||||||
| 3.23 (0.05) | 2.87 (0.04) | 3.07 (0.04) | |||||||||||
| 371 | Cesarean section without complications | 3.69 (0.03) | 2.98–4.40 | 0.16 | 0.13 (0.02) | 3.66 (0.03) | 2.94–4.38 | 0.17 | 0.13 (0.02) | 3.59 (0.03) | 2.88–4.31 | 0.17 | 0.13 (0.02) |
| 0.03 (0.00) | 0.03 (0.00) | 0.03 (0.00) | |||||||||||
| 0.64 (0.00) | 0.62 (0.00) | 0.62 (0.00) | |||||||||||
*
Variance component at the hospital level.
†
Variance component at the physician level.
‡
Variance component at the patient level.
Values are bold if the difference between the hospital and physician variance is significant.
DRG, diagnosis-related group; ICC, intraclass correlation; SE, standard error; CI, confidence interval.