Table 4.
Univariate analysis
| Factors | Recurrence group (n = 33) | Non-recurrence group (n = 45) | t /χ2 | P value |
| Gender | 2.792 | 0.095 | ||
| Male (n = 44) | 15 (45.45) | 29 (64.44) | ||
| Female (n = 34) | 18 (54.55) | 16 (35.56) | ||
| Age (yr) | 0.179 | 0.672 | ||
| ≥ 60 (n = 38) | 17 (51.52) | 21 (46.67) | ||
| < 60 (n = 40) | 16 (48.48) | 24 (53.33) | ||
| Smoking history | 0.694 | 0.405 | ||
| Yes (n=43) | 20 (60.61) | 23 (51.11) | ||
| No (n=35) | 13 (39.39) | 22 (48.89) | ||
| History of alcoholism | 1.319 | 0.251 | ||
| Yes (n=14) | 4 (12.12) | 10 (22.22) | ||
| No (n=64) | 29 (87.88) | 35 (77.78) | ||
| Lesion location | 0.602 | 0.740 | ||
| The upper thoracic area (n = 19) | 7 (21.21) | 12 (26.67) | ||
| The middle thoracic area (n = 34) | 16 (48.49) | 18 (40.00) | ||
| The lower thoracic area (n = 25) | 10 (30.30) | 15 (33.33) | ||
| Tumor size | 7.648 | 0.006 | ||
| ≥ 3 cm (n = 45) | 25 (75.76) | 20 (44.44) | ||
| < 3 cm (n = 33) | 8 (24.24) | 25 (55.56) | ||
| Differentiation | 7.093 | 0.008 | ||
| Low differentiation (n = 25) | 16 (48.48) | 9 (20.00) | ||
| Moderate + high differentiation (n = 53) | 17 (51.52) | 36 (80.00) | ||
| TNM staging | 6.825 | 0.009 | ||
| Stage I (n = 27) | 6 (18.18) | 21 (46.67) | ||
| Stage II + III (n = 51) | 27 (81.82) | 24 (53.33) | ||
| Adjuvant therapy | 0.946 | 0.331 | ||
| Chemotherapy (n = 52) | 24 (72.73) | 28 (62.22) | ||
| Radiotherapy (n = 26) | 9 (27.27) | 17 (37.78) | ||
| Expression of miR-1304 | 8.877 | 0.003 | ||
| High expression (n = 39) | 23 (69.70) | 16 (35.56) | ||
| Low expression (n = 39) | 10 (30.30) | 29 (64.44) |