Table 1. Age, gender distribution, transition mode, and conditional transition probability by disease status of colorectal neoplasm from selected samples.
| Disease type | Number of selected samples | Age (mean±s.d.) | Male/female subject | Transition mode | Conditional transition probabilitiesa |
|---|---|---|---|---|---|
| Normal | 305 | 49.57±15.15 | 0.93 | Normal→Normal | P1*(t) |
| Polyp | 300 | 57.14±13.60 | 1.34 | Normal→Polyp | P2*(t) |
| Invasive carcinoma | 116 | 60.56±13.27 | 1.52 | Normal→Invasive carcinomab | P3*(t) |
a
For the formula, see Appendix A;
b
Including adenoma–carcinoma sequence and de novo carcinoma sequence.