Table 6.
Risk factors of inaccurate diagnosis of TRUS for rectal cancer staging
| Factor | B value | P value | 95% CI | |
|---|---|---|---|---|
| lower bound | Upper bound | |||
| Age | 0.528 | 0.174 | 0.848 | 3.389 |
| Gender | -0.340 | 0.355 | 0.347 | 1.459 |
| BMI | -0.402 | 0.521 | 0.245 | 1.865 |
| Hb level | -0.104 | 0.799 | 0.405 | 2.004 |
| CEA level | 0.945 | 0.004 | 1.324 | 5.002 |
| Surgical Procedures | -0.048 | 0.132 | 0.279 | 1.381 |
| Tumor location | 1.533 | 0.011 | 0.090 | 0.847 |
Cox regression analysis of inaccurate evaluation of TRUS compared with pathological tumor staging, with Enter method utilized for covariate inclusion. Abbreviations: BMI, body mass index; Hb, hemoglobin; CEA, carcinoembryonic antigen; B, slope of the regression; CI, confidential interval. Cutoff values for each factor: age, 60yrs; gender, male; BMI, 18.5-25.0 kg/m2; Hb, 110g/ml for the female and 120g/ml for the male; CEA, 5μg/L; Surgical procedures, sphincter conserving or not; tumor location, segment IV and above. P<0.05 indicates statistical significance.