Table 1 Characteristics of dataset stratified by training and test datasets.
Characteristic | All patients (n = 102) | Training dataset (n = 86) | Test dataset (n = 16) | p-value |
|---|---|---|---|---|
Age (yrs) | ||||
Median (IQR) | 60.0 (9.3) | 60.0 (9.4) | 60.5 (8.7) | 0.100 |
Sex | ||||
Female | 60 (58.8%) | 49 (57%) | 11 (68.8%) | 0.380 |
Male | 42 (41.2%) | 37 (43%) | 5 (31.2%) | 0.380 |
Smoking status | ||||
Median (IQR) pack years smoking | 40.0 (27.9) | 40.0 (30.8) | 40.0 (36.5) | 0.468 |
Tumor characteristics | ||||
Clinical overall stage | ||||
II (n = 9, 8.8%) | 9 (8.8%) | 9 (10.5%) | 0 (0%) | 0.175 |
A | 2 (2.0%) | 2 (2.3%) | 0 (0%) | |
B | 7 (6.9%) | 7 (8.1%) | 0 (0%) | |
III (n = 93, 91.2%) | 93 (91.2%) | 77 (89.5%) | 16 (100%) | 0.175 |
A | 77 (75.5%) | 65 (75.6%) | 12 (75%) | |
B | 13 (12.7%) | 9 (10.5%) | 4 (25%) | |
IV (n = 3, 2.9%) | 3 (2.9%) | 3 (3.5%) | 0 (0%) | 0.448 |
Median (IQR) clinical tumor size at diagnosis (cm) | 4.2 (2.4) | 4.4 (3.4) | 3.3 (1.5) | 0.054 |
Survival | ||||
2-year survival | 73 (72%) | 62 (72%) | 11 (68.8%) | 0.786 |
Median (IQR) length of follow-up (yr) | 3.64 (4.38) | 4.07 (4.4) | 2.54 (2.4) | 0.26 |
