Table 4.
Analyses of factors associated with the 90-day mortality (logistic regression models) and overall survival (Cox proportional hazard models)
| Category | n | Univariate analyses |
Multivariate analyses |
||
|---|---|---|---|---|---|
| Odds ratio (95% CI) | P value | Odds ratio (95% CI) | P value | ||
| 90-d mortality | |||||
| Age | |||||
| Per 1-y increase | 1.02 (0.97-1.06) | .42 | 1.02 (0.98-1.07) | .40 | |
| Sex | |||||
| F/M | 92/133 | 2.11 (0.65-6.86) | .21 | 2.08 (0.61-7.65) | .25 |
| Diabetes mellitus | |||||
| Yes/no | 64/161 | 0.49 (0.07-1.93) | .36 | 0.60 (0.09-2.51) | .52 |
| Performance status∗ | |||||
| 2-4/0-1 | 60/154 | 1.91 (0.70-8.97) | .29 | 2.42 (0.66-8.64) | .18 |
| Extent of mediastinitis | |||||
| Lower mediastinum/above carina | 125/100 | 4.26 (1.09-28.2) | .036 | 4.63 (1.12-31.9) | .034 |
| Duration to drainage | |||||
| Per 1-d increase | 1.02 (0.94-1.08) | .43 | 1.01 (0.93-1.07) | .68 | |
| n | Hazard ratio (95% CI) | P value | Hazard ratio (95% CI) | P value | |
|---|---|---|---|---|---|
| Overall survival | |||||
| Age | |||||
| Per 1-y increase | – | 1.04 (1.01-1.08) | .022 | 1.04 (1.01-1.08) | .027 |
| Sex | |||||
| F/M | 92/133 | 1.07 (0.51-2.27) | .86 | 0.87 (0.38-1.98) | .74 |
| Diabetes mellitus | |||||
| Yes/no | 64/161 | 0.75 (0.32-1.78) | .52 | 1.01 (0.41-2.48) | .98 |
| Performance status∗ | |||||
| 2-4/0-1 | 60/154 | 0.95 (0.40-2.26) | .92 | 1.00 (0.41-2.48) | .99 |
| Extent of mediastinitis | |||||
| Lower mediastinum/above carina | 125/100 | 1.43 (0.66-3.10) | .36 | 1.57 (0.69-3.56) | .28 |
| Duration to drainage | |||||
| Per 1-d increase | – | 1.04 (1.00-1.06) | .032 | 1.03 (0.99-1.05) | .10 |
CI, Confidence interval; F, female; M, male.
∗
11 patients were not evaluable.