Table 2 Under different SA groups, the endpoint outcomes for BMI subgroups before and after PSM
Outcome | High-SA group (BMI, kg/m2) | p-value | Low-SA group (BMI, kg/m2) | p-value | ||||
|---|---|---|---|---|---|---|---|---|
< 25 kg/m2 | 25-30 kg/m2 | > 30 kg/m2 | < 25 kg/m2 | 25-30 kg/m2 | > 30 kg/m2 | |||
Before PSM | ||||||||
Hospital mortality, % | 15.4 | 7.3 | 6.9 | 0.005** | 17.5 | 18.5 | 13.8 | 0.342 |
90-day mortality, % | 28.6 | 14.2 | 13.8 | < 0.001*** | 30.9 | 31.9 | 23.9 | 0.110 |
Hospital LOS, days | 11(7–15) | 11(7–16) | 10(7–15) | 0.502 | 12(9–20) | 12(8–18) | 13(9–21) | 0.189 |
ICU LOS, days | 4.2(3.0-11.1) | 4.5(3.1-7.0) | 4.1(2.9–6.8) | 0.487 | 5.0(3.4–9.7) | 5.0(3.4–8.5) | 5.3(3.3–9.4) | 0.931 |
After PSM | ||||||||
Hospital mortality, % | 16.1 | 6.6 | 8.7 | 0.011* | 12.1 | 13.1 | 12.8 | 0.962 |
90-day mortality, % | 28.2 | 13.1 | 15.8 | 0.001** | 25.5 | 26.9 | 23.2 | 0.714 |
Hospital LOS, days | 11(7–15) | 11(7–17) | 10(7–16) | 0.565 | 12(9–18) | 11(7–17) | 13(8–20) | 0.138 |
ICU LOS, days | 4.1(7.1–2.9) | 4.3(3.1–7.1) | 4.1(3.0-7.1) | 0.416 | 4.6(3.1–8.3) | 4.9(3.2–7.5) | 5.1(3.2–8.8) | 0.683 |