Table 1.
Clinical stage–specific survival rates (1 year to 5 years) of postoperative non-small cell lung cancer patients
| Survival rates (%) and number of subjects at risk | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| N | 1Y | 2Y | 3Y | 4Y | 5Y | ||||||||||
| Clinical stages (DPC data) | % | 95% CI | na | % | 95% CI | n | % | 95% CI | n | % | 95% CI | n | % | 95% CI | |
| IA | 3812 | 98.2 | (±0.6) | 2014 | 96.3 | (±0.8) | 939 | 92.6 | (±1.8) | 318 | 89.3 | (±3.1) | 36 | 85.8 | (±7.3) |
| IB | 1581 | 95.4 | (±1.2) | 781 | 90.7 | (±2.2) | 365 | 86.6 | (±2.9) | 137 | 85.0 | (±3.7) | 25 | 85.0 | (±3.7) |
| IIA | 420 | 94.6 | (±2.5) | 200 | 87.8 | (±4.7) | 84 | 78.0 | (±8.0) | 21 | 73.9 | (±11.0) | 4 | 24.6 | (±39.6) |
| IIB | 480 | 86.4 | (±3.7) | 230 | 71.7 | (±5.9) | 92 | 66.3 | (±7.6) | 34 | 58.6 | (±10.6) | 7 | 58.6 | (±10.6) |
| IIIA | 771 | 89.1 | (±2.5) | 386 | 78.7 | (±4.1) | 146 | 71.1 | (±6.1) | 58 | 59.3 | (±11.6) | 12 | 44.5 | (±26.7) |
| JJCLCR (2011) Clinical stages 6th editionb | |||||||||||||||
| IA | 6295 | 97.0 | 92.7 | 89.1 | 85.5 | 82.0 | |||||||||
| IB | 2788 | 91.0 | 81.9 | 74.8 | 68.0 | 63.4 | |||||||||
| IIA | 203 | 89.7 | 75.0 | 64.3 | 59.2 | 55.4 | |||||||||
| IIB | 899 | 83.7 | 69.5 | 59.8 | 54.0 | 48.6 | |||||||||
| IIIA | 940 | 80.9 | 64.3 | 53.6 | 47.7 | 43.3 | |||||||||
| JJCLCR (2011) Clinical stages 7th editionb | |||||||||||||||
| IA | 6295 | 97.0 | 92.7 | 89.1 | 85.5 | 82.0 | |||||||||
| IB | 2339 | 92.5 | 84.4 | 77.6 | 70.8 | 66.1 | |||||||||
| IIA | 819 | 88.7 | 85.4 | 66.8 | 60.2 | 54.5 | |||||||||
| IIB | 648 | 80.0 | 63.6 | 54.7 | 50.4 | 46.4 | |||||||||
| IIIA | 1216 | 81.4 | 64.7 | 53.7 | 47.3 | 42.8 | |||||||||
| IASLC (2009) Clinical stages 6th editionc | |||||||||||||||
| IA | 831 | 50 | |||||||||||||
| IB | 1842 | 40 | |||||||||||||
| IIA | 25 | 24 | |||||||||||||
| IIB | 2151 | 25 | |||||||||||||
| IIIA | 3005 | 18 | |||||||||||||
| IASLC (2009) Clinical stages 7th editionc | |||||||||||||||
| IA | 831 | 50 | |||||||||||||
| IB | 1284 | 43 | |||||||||||||
| IIA | 483 | 36 | |||||||||||||
| IIB | 2248 | 25 | |||||||||||||
| IIIA | 3175 | 19 | |||||||||||||
aNumber at risk.
bData from the Japanese Joint Committee for Lung Cancer Registration (JJCLCR) in 2011 (Sawabata et al. 2011); 95% CI were not available for these data.
cData from the International Association for the Study of Lung Cancer (IASLC) in 2009 (Tanoue and Detterbeck 2009); 95% CI were not available for these data.