Table 4. Univariate analysis of factors affecting median survival time of pT1c33N0M0 NSCLC patients.
| Characteristics | N (%) | Median survival time (months) | χ 2 | P |
|---|---|---|---|---|
| Gender | ||||
| Male | 169 (66.27%) | 54.0 | 0.123 | 0.726 |
| Female | 86 (33.73%) | 52.0 | ||
| Age (years) | ||||
| ≤60 | 85 (33.33%) | 56.0 | 0.127 | 0.722 |
| >60 | 170 (66.67%) | 52.0 | ||
| Smoking history | ||||
| Yes | 76 (29.80%) | 53.0 | 0.040 | 0.842 |
| No | 179 (70.20%) | 54.0 | ||
| Surgical site | ||||
| Right upper lung | 52 (20.39%) | 49.0 | 0.999 | 0.794 |
| Right middle lung | 22 (8.63%) | 41.0 | ||
| Right lower lung | 32 (12.55%) | 54.0 | 0.067 | 0.966 |
| Left upper lung | 97 (38.04%) | 54.0 | ||
| Left lower lung | 52 (20.39%) | 54.0 | ||
| Tumor max diameter | ||||
| ≤3 cm | 163 (63.92%) | 64.0 | 21.056 | <0.001 |
| >3 cm | 92 (36.08%) | 40.0 | ||
| T stage | ||||
| T1c | 153 (60.00%) | 64.0 | <0.001 | |
| T2 | 77 (30.20%) | 45.0 | 29.913 | |
| T3 | 25 (9.80%) | 10.0 | ||
| Pathological type | ||||
| Adenocarcinoma | 154 (60.39%) | 54.0 | 0.871 | 0.647 |
| Squamous carcinoma | 79 (30.98%) | 52.0 | 0.276 | 0.871 |
| Other | 22 (8.63%) | 68.0 | ||
| Preoperative comorbidities | ||||
| Yes | 52 (20.39%) | 40.0 | 0.029 | 0.865 |
| No | 203 (79.61%) | 57.0 | ||
| Lymph nodes | ||||
| 0–10 | 60 (23.53%) | 41.0 | <0.001 | |
| 11–16 | 89 (34.90%) | 56.0 | 6.068 | |
| >16 | 106 (41.57%) | 60.0 |