Table 4.
Excess Outcomes of Nosocomial Infection After PS Matching
| Outcomes | NIs (n=196) | Without NIs (n=325) | Excess Values✝ | p-value |
|---|---|---|---|---|
| Hospitalization costs (CNY), median (IQR) | 154,511.48 (108,377.07–213,081.81) | 80,914.86 (49,894.51–130,853.22) | 73,596.62 | p<0.001 |
| Antibacterial drug costs (CNY), median (IQR) | 10,635.34 (4727.39–18,835.48) | 3022.90 (1509.72–6137.23) | 7612.44 | p<0.001 |
| LOS in ICU (days), median (IQR) | 17 (11.0–28.75) | 5.0 (4.0–10.0) | 12.0 | p<0.001 |
| LOS in hospital (days), median (IQR) | 30.0 (19.0–45.0) | 16.0 (10.0–29.0) | 14.0 | p<0.001 |
| Deaths in ICU (mortality) | 18 (9.2%) | 11 (3.4%) | 5.8% | p=0.005 |
| Predicted deaths in ICU (predicted mortality) | 57 (29.1%) | 58 (17.8%) | 11.3% | p=0.003 |
Notes: ✝Excess values are the median difference between nosocomial and non-nosocomial infections. P value in bold shows that the variables are statistically significant.
Abbreviations: PS matching, Propensity score matching; NIs, Nosocomial infections; CNY, China Yuan; LOS, Length of stay; ICU, Intensive Care Unit; IQR, Interquartile range.