Table 2.
Association between CCI and baseline characteristica
| Univariate analysis | Multivariate analysis | ||||
|---|---|---|---|---|---|
| OR (95% CI) | P | OR (95% CI) | P | ||
| Age, y | < 65 | 1 | 1 | ||
| ≥65 | 1.73 (0.93–3.22) | 0.082 | 1.30 (0.66–2.55 | 0.451 | |
| Gender | Male | 1 | 1 | ||
| Female | 1.40 (0.75–2.59) | 0.291 | 2.02 (0.96–4.27) | 0.065 | |
| Histology | Adenocarcinoma | 1 | 1 | ||
| Squamous | 1.03 (0.55–1.90) | 0.935 | 0.89 (0.43–1.83) | 0.748 | |
| Cancer stage | IIIB | 1 | 1 | ||
| IV | 1.31 (0.65–2.63) | 0.444 | 1.09 (0.50–2.38) | 0.827 | |
| Smoking status | Nonsmoker | 1 | 1 | ||
| Smoker | 3.53 (1.82–6.87) | <0.001 | 4.12 (1.92–8.84) | <0.001 | |
| Performance statusb | 1 | 1 | 1 | ||
| 2 | 2.37 (1.27–4.44) | 0.007 | 2.22 (1.14–4.33) | 0.019 | |
aOdds ratio > 1 indicates greater likelihood of higher CCI; bthere was no patient with performance status = 0 in our cohort