Table 1. Characteristics of patients with a cCR after NCRT.
| Variable | Observation Group | Surgery Group | All Cases | χ2 | P | |||
|---|---|---|---|---|---|---|---|---|
| No. of Cases | % | No. of Cases | % | No. of Cases | % | |||
| Patients (n=122) | 30 | 24.6 | 92 | 75.4 | 122 | 100.0 | ||
| Age (median, range, year) | 62 (55-82) | 56 (34-73) | 58 (34-82) | 3.405* | 0.076 | |||
| Gender | ||||||||
| Male | 18 | 23.1 | 60 | 76.9 | 78 | 63.9 | 0.267 | 0.605 |
| Female | 12 | 27.3 | 32 | 72.7 | 44 | 36.1 | ||
| Morbidity | ||||||||
| Yes | 10 | 28.6 | 25 | 71.4 | 35 | 28.7 | 0.420 | 0.517 |
| No | 20 | 23.0 | 67 | 77.0 | 87 | 71.3 | ||
| Distance from anal verge (mean, range, cm) | 3.5 (0-7) | 3.8 (0-7) | 3.7 (0-7) | 0.203* | 0.652 | |||
| Serum CEA levels | ||||||||
| Positive | 8 | 25.8 | 23 | 74.2 | 31 | 25.4 | 0.033 | 0.856 |
| Negative | 22 | 24.2 | 69 | 75.8 | 91 | 74.6 | ||
| cT stage | ||||||||
| T1 | 3 | 23.1 | 10 | 76.9 | 13 | 10.7 | 0.093 | 0.993 |
| T2 | 5 | 26.3 | 14 | 73.7 | 19 | 15.6 | ||
| T3 | 15 | 23.8 | 48 | 76.2 | 63 | 51.6 | ||
| T4 | 7 | 25.9 | 20 | 74.1 | 27 | 22.1 | ||
| cN stage | ||||||||
| N0 | 14 | 26.4 | 39 | 73.6 | 53 | 43.4 | 0.168 | 0.682 |
| N+ | 16 | 23.2 | 53 | 76.8 | 69 | 56.6 | ||
Abbreviations: Age and Distance from anal verge tested using t-test,
Morbidity includes chronic hepatitis and diabetes mellitus.