Table 3.
Overall survival of non‐small‐cell lung cancer patients by disease stage between academic vs community center
| Academic Center | Community Center | P‐value | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| TNM stage | Number of patients | Median OS (months) | 4‐year OS (%) | 95% CI for OS | Number of patients | Median OS (months) | 4‐year OS | 95% CI for OS | Log‐rank hazard ratio | |
| 1 | 70 990 | 58.7 | 56.0 | 55.6‐56.5 | 137 026 | 46.0 | 48.7 | 48.4‐49.0 | 0.796 | <0.00001 |
| 2 | 16 784 | 27.7 | 36.4 | 35.6‐37.3 | 39 320 | 21.3 | 29.6 | 29.0‐30.1 | 0.809 | <0.00001 |
| 3 | 61 678 | 14.4 | 19.6 | 19.2‐19.9 | 144 763 | 11.6 | 14.9 | 14.7‐15.1 | 0.841 | <0.00001 |
| 4 | 111 697 | 5.9 | 5.9 | 5.7‐6.0 | 256 797 | 4.8 | 4.0 | 3.9‐4.1 | 0.861 | <0.00001 |
| Stage missing | 59 362 | 35.9 | 44.2 | 43.7‐44.6 | 128 421 | 21.9 | 35.0 | 34.8‐35.3 | 0.777 | <0.00001 |
| Totala | 320 511 | 16.4 | 28.5 | 28.3‐28.7 | 706 327 | 11.9 | 22.1 | 22.0‐22.2 | 0.819 | <0.00001 |
Total number of patients is less than original cohort due to missing data on OS for 123 884 patients.