Table 3.
Multivariate Cox Proportional Hazards Models of Overall Survival in Patients with PCs
| Covariates | Case Number | HR for Death (95% CI) | p valuea |
|---|---|---|---|
| Model 1: patients with PCs (n=325) | |||
| ETT + MV during EGD | <0.001*** | ||
| No requirement | 278 | reference | |
| Required | 47 | 6.38 (2.99–13.60) | |
| Age | 0.007** | ||
| <65 | 247 | reference | |
| ≥65 | 78 | 2.80 (1.33–5.91) | |
| GI complications | 0.036* | ||
| Absent | 222 | reference | |
| Complicated | 103 | 2.30 (1.05–5.02) | |
| Model 2: comparison with control group (n=615) | |||
| Ingested amount (unit: 100 mL) | 615 | 1.14 (1.05–1.24) | 0.003** |
| Psychiatric comorbidities | 0.376 | ||
| Absent | 316 | reference | |
| Present | 299 | 1.28 (0.74–2.23) | |
Notes: aThe p values were determined using Cox proportional hazards model. The standards for asterisks are as follows: p<0.05*, p<0.01**, and p<0.001***.
Abbreviations: CI, confidence interval; EGD, esophagogastroduodenoscopy; ETT + MV, endotracheal tube with mechanical ventilation; GI, gastrointestinal; HR, hazard ratio.