Table 4 Multivariate Cox regression analysis looking at the influence of surgery on overall survival since the introduction of the NLCA
Year | Total number of patients ( n) | Proportion of patients who had surgery (%) | Adjusted HR (95% CI) a |
|---|---|---|---|
Group 1 = PS 0/1/2 and stage IA–IIB | |||
2004/2005 | 1098 | 49 | 0.30 (0.26–0.36) |
2006 | 1206 | 50 | 0.34 (0.29–0.40) |
2007 | 1567 | 54 | 0.37 (0.32–0.42) |
2008 | 2038 | 56 | 0.32 (0.28–0.37) |
2009 | 3166 | 57 | 0.31 (0.27–0.35) |
Group 2 = PS 0/1/2 and stage IIIA | |||
2004/2005 | 496 | 18 | 0.44 (0.34–0.59) |
2006 | 609 | 13.3 | 0.39 (0.30–0.52) |
2007 | 746 | 15 | 0.40 (0.31–0.52) |
2008 | 926 | 20 | 0.46 (0.37–0.56) |
2009 | 1387 | 18 | 0.40 (0.33–0.49) |
