Variable | Univariate analysis | Multivariate analysis | ||
---|---|---|---|---|
Log-rank χ2 test | P-value | HR (95% CI) | P value | |
Insurance status | 26.663 |  < 0.001 |  |  |
Insured | Â | Â | Reference | Â |
Uninsured |  |  | 5.187 (1.628–16.524) | 0.005 |
Unknown |  |  | 1.326 (1.100–1.600) | 0.003 |
Histology | 58.350 |  < 0.001 |  |  |
Epithelioid | Â | Â | Reference | Â |
Biphasic |  |  | 2.279 (1.339–3.877) | 0.002 |
Sarcomatoid |  |  | 3.913 (2.347–6.523) |  < 0.001 |
Unknown |  |  | 2.301 (1.400–3.782) | 0.012 |
Grade | 39.596 |  < 0.001 |  |  |
Well differentiated | Â | Â | Reference | Â |
Moderately differentiated |  |  | 1.978 (0.811–4.824) | 0.134 |
Poorly differentiated |  |  | 3.900 (2.194–6.933) |  < 0.001 |
Undifferentiated |  |  | 2.430 (1.038–5.689) | 0.041 |
Unknown |  |  | 2.301 (1.400–3.782) | 0.001 |
Stage | 23.936 |  < 0.001 |  |  |
Localized | Â | Â | Reference | Â |
Regional |  |  | 1.244 (0.855–1.811) | 0.254 |
Distant |  |  | 1.735 (1.255–2.401) | 0.001 |
Unknown |  |  | 1.165 (0.792–1.713) | 0.438 |
Surgery | 43.605 |  < 0.001 |  |  |
Cancer-directed surgery | Â | Â | Reference | Â |
No cancer-directed surgery |  |  | 1.733 (1.433–2.095) |  < 0.001 |
Unknown |  |  | 0.857 (0.435–1.689) | 0.656 |
Chemotherapy | 18.157 |  < 0.001 |  |  |
Yes | Â | Â | Reference | Â |
No or unknown |  |  | 1.532 (1.282–1.831) |  < 0.001 |