TABLE 3 ] .
Regression Model Results of Time to IPC Removal
| Univariate Regression | ||||
| Variable | No. Patients (N = 91) | % | Subhazard Ratio | P Value |
| Age category | ||||
| < 60 y | 33 | 36.26 | Reference | … |
| 60-70 y | 27 | 29.67 | 0.79 | .63 |
| > 70 y | 31 | 34.07 | 0.37 | .09 |
| Sex | ||||
| Male | 65 | 71.43 | Reference | … |
| Female | 26 | 28.57 | 1.21 | .67 |
| Underlying malignancy | ||||
| Other | 35 | 38.46 | Reference | … |
| Lymphoma | 56 | 61.54 | 1.06 | .89 |
| Chemotherapy activity | ||||
| Active | 39 | 42.86 | Reference | … |
| Within the past 6 wk | 17 | 18.68 | 1.28 | .65 |
| > 6 wk ago | 23 | 25.27 | 0.48 | .27 |
| Unknown | 12 | 13.19 | 0.99 | .98 |
| Pleural space physiology at IPC placement | ||||
| Nonexpandable lung | 15 | 16.48 | Reference | … |
| Reexpandable lung | 18 | 19.78 | 2.19 | .35 |
| Not assessed | 58 | 63.74 | 1.89 | .39 |
| Pleural effusion etiology | ||||
| MPE (cytology or histology positive) | 50 | 54.95 | Reference | … |
| MPE suspected | 24 | 26.37 | 0.99 | .99 |
| Recurrent exudative effusion | 11 | 12.09 | 0.81 | .79 |
| Recurrent transudative effusion | 6 | 6.59 | 0.64 | .67 |
MPE = malignant pleural effusion. See Table 2 legend for expansion of other abbreviation.