Table 4.
Lung Cancer Specific Survival by Histology and Study Arm
| LDCT Arm | CXR Arm | p-value (difference between arms) |
||
|---|---|---|---|---|
| Survival Rate 2 | Survival Rate 2 | |||
| Histologic Type | Start of follow-up for analysis 1 | 3 years | 6 years | 3 years|6 years | |
| Adenocarcinoma | Diagnosis | 69.7 | 59.1 | 43.5 |33.2 | <0.0001 |
| Randomization | 89.4|71.6 | 81.9| 54.5 | < 0.0001 | |
| NSCLC-NOS | Diagnosis | 46.1|43.8 | 29.5|24.4 | 0.004 |
| Randomization | 80.9|55.4 | 75.0|39.5 | 0.034 | |
| All NSCLC minus squamous (excl BAC) | Diagnosis | 64.4 | 54.3 | 38.4| 30.7 | <0.0001 |
| Randomization | 87.0 | 67.2 | 79.1|49.1 | <0.0001 | |
| Squamous Cell | Diagnosis | 59.5|50.7 | 58.6|48.5 | 0.82 |
| Randomization | 88.7|66.6 | 89.3|65.7 | 0.68 | |
| 1 yr| 3yrs|6 yrs | 1 yr| 3yrs|6 yrs | |||
| Small Cell | Diagnosis | 56.2|15.8|14.4 | 49.9|21.3|11.5 | 0.72 |
| Randomization | 97.9|76.2|39.1 | 95.7|77.2|37.8 | 0.80 |
1
. Start of follow-up for survival analysis – either date of diagnosis or date of NLST randomization.
2
. Lung cancer specific survival.