From: An eight-miRNA signature as a potential biomarker for predicting survival in lung adenocarcinoma
Covariates | Total | Training set | Testing set | P-value | |
---|---|---|---|---|---|
N = 372 | N = 186 | N = 186 | |||
Age, years, no (%) | <=65 | 174 (46.8) | 94 (50.5) | 80 (43.0) | 0.1767 |
 | >65 | 198 (53.2) | 92 (49.5) | 106 (57.0) |  |
Gender, no (%) | Male | 176 (47.3) | 87 (46.8) | 89 (47.8) | 0.9173 |
 | Female | 196 (52.7) | 99 (53.2) | 97 (52.2) |  |
Vital status | Alive | 258 (69.4) | 125 (67.2) | 133 (71.5) | 0.4311 |
 | Dead | 114 (30.6) | 61 (32.8) | 53 (28.5) |  |
Disease stage, no (%) | I | 199 (53.5) | 100 (53.8) | 99 (53.2) | 0.9000 |
 | II | 89 (23.9) | 42 (22.6) | 47 (25.3) |  |
 | III | 66 (17.7) | 35 (18.8) | 31 (16.7) |  |
 | IV | 17 (4.6) | 9 (4.8) | 8 (4.3) |  |
Lymph node | N0 | 231 (62.1) | 118 (63.4) | 113 (60.8) | 0.6046 |
Involvement, no (%) | N1 | 72 (19.4) | 32 (17.2) | 40 (21.5) | Â |
 | N2 | 58 (15.6) | 32 (17.2) | 26 (14.0) |  |
 | N3 | 1 (0.3) | 0 (0.0) | 1 (0.5) |  |
M stage, no (%) | M0 | 266 (71.5) | 131 (70.4) | 135 (72.6) | 0.4400 |
 | M1 | 16 (4.3) | 10 (5.4) | 6 (3.2) |  |
T stage, no (%) | T1 | 112 (30.1) | 52 (28.0) | 60 (32.3) | 0.6320 |
 | T2 | 211 (56.7) | 108 (58.1) | 103 (55.4) |  |
 | T3 | 31 (8.3) | 15 (8.1) | 16 (8.6) |  |
 | T4 | 16 (8.3) | 10 (5.4) | 6 (3.2) |  |
Smoking status | Nonsmoker | 143 (38.4) | 66 (35.5) | 77 (41.4) | 0.3214 |
 | Smoker | 217 (58.3) | 113 (60.8) | 104 (55.9) |  |
Adjuvant treatment | None | 255 (68.5) | 121 (65.1) | 134 (72.0) | 0.5530 |
 | Chemotherapy | 68 (18.3) | 37 (19.9) | 31 (16.7) |  |
 | Radiotherapy | 20 (5.4) | 13 (7.0) | 7 (3.8) |  |
 | Chemoradiotherapy | 27 (7.3) | 14 (7.5) | 13 (7.0) |  |
 | Other | 2 (0.5) | 1 (0.5) | 1 (0.5) |  |