Table 3. Admission characteristics of the patients in both groups after PS matching.
| Variables | DMP patients (n=170) | Controls (n=170) | P value |
|---|---|---|---|
| Episodes | 287 | 207 | – |
| ALOS (mean ± SD) (days) | 4.2±4.7 | 4.3±4.9 | 0.8800† |
| Total hospital days | 1,207 | 891 | – |
| Average hospital days per patient | 7.1 | 5.2 | 0.0003↕ |
| Total person years of follow up | 152.02 | 129.49 | – |
| Total hospital days per 100 person days¶ | 2.2 | 1.9 | 0.0012┤ |
| Total No. of deaths (%) | 18 (10.6) | 35 (20.6) | 0.0105‡ |
| Deaths due to respiratory system diseases (%) | 15 (8.8) | 26 (15.3) | 0.0664‡ |
| Crude all-cause mortality rate‡ per person year (95% CI) | 0.12 (0.07–0.19) | 0.27 (0.19–0.38) | 0.0036┤ |
| Crude mortality rate‡ per person year for Respiratory system diseases (95% CI) | 0.09 (0.06–0.16) | 0.20 (0.13–0.29) | 0.0282┤ |
| Readmission rate per person year (95% CI) | 0.36 (0.27–0.48) | 0.17 (0.11–0.26) | 0.0032┤ |
| 30 day readmission rate per person year (95% CI) | 0.14 (0.09–0.22) | 0.03 (0.01–0.08) | 0.0016┤ |
| No. of days admitted to hospital per100 person days | 2.19 (2.07–2.31) | 1.88 (1.76–2.01) | 0.0007┤ |
†, Wilcoxon rank sum test; ↕, Student t-test; ‡, Z test for proportion; ┤, IRI, incidence rate comparison, (STATA); ¶, person time (days)—program: 55,527 and controls: 47,295. ALOS, average length of stay; SD, standard deviation; CI, confidence interval.