Table 2 Propensity score match comparison: hospital mortality by complex surgery quartile
From: A cross-sectional retrospective analysis of the regionalization of complex surgery
Mortality | Matcheda | Basedb | Comparison | Base (%) | Comparison (%) | Significance | |
|---|---|---|---|---|---|---|---|
Quartile comparison | Population size | Mortalities | Mortalities | Mortality R | Mortality R | Chi2 | Pr > |Chi2 |
1 vs. 4 | 2916 | 20 | 15 | 1.4 | 1.0 | 0.72 | 0.39 |
1 vs. 3 | 2476 | 12 | 15 | 1.0 | 1.2 | 0.33 | 0.56 |
1 vs. 2 | 2152 | 11 | 8 | 1.0 | 0.7 | 0.47 | 0.48 |
2 vs. 4 | 11692 | 49 | 68 | 0.8 | 1.2 | 3.11 | 0.07 |
2 vs. 3 | 9798 | 44 | 40 | 0.9 | 0.8 | 0.19 | 0.66 |
3 vs. 4 | 16205 | 97 | 222 | 2.4 | 2.7 | 1.51 | 0.21 |