Table 1 Clinical characteristics of the primary cohort
Characteristic | Total | Non-SLM (n = 102) | SLM (n = 50) | P value |
|---|---|---|---|---|
Sex, n (%) | Â | Â | Â | 0.058 |
 Male | 123 (69.9%) | 67 (54.5%) | 56 (45.5%) |  |
 Female | 53 (30.1%) | 37 (69.8%) | 16 (30.2%) |  |
Age, years | 57.72 ± 10.21 | 57.12 ± 9.02 | 58.60 ± 11.72 | 0.368 |
Primary tumor site, cm | 5.80 (3.15) | 5.30 (2.60) | 6.35 (5.00) | 0.011 |
CEA level, n (%) | Â | Â | Â | <0.001 |
 Normal (< 5 ng/ml) | 87 (49.4%) | 66 (75.9%) | 21(24.1%) |  |
 Elevated (≥ 5 g/ml) | 89 (50.6%) | 38 (42.7%) | 51 (57.3%) |  |
CA199 level, n (%) | Â | Â | Â | <0.001 |
 Normal (< 37 U/ml) | 124 (70.5%) | 95 (76.6%) | 29 (23.4%) |  |
 Elevated (≥ 37/ml) | 52 (29.5%) | 9 (17.3%) | 43 (82.7%) |  |