Table 3.
Survival time, cumulative survival probability and log-rank test for the study population according to patient related characteristics during six-year of follow-up (Kaplan–Meier method) of colorectal cancer patients in TASH Oncology Department
| Variable | Category | Median survival (mo) (95% CI) | 1-year survival | 2-year survival | 3-year survival | 4-year survival | 5-year survival | Overall survival | Log-rank test (P-value) |
|---|---|---|---|---|---|---|---|---|---|
| Sex | Male | 30.4 (26.1-34.8) | 91.7 | 62.8 | 38.5 | 26.9 | 20.6 | 13.7 | 0.023 |
| Female | 38.3 (36.5-52.8) | 89.3 | 72.7 | 60.2 | 39.2 | 25.2 | 25.2 | ||
| Age (yr) | < 40 | 38.0 (30.5-54.3) | 91.5 | 71.5 | 54.1 | 44.7 | 27.4 | 22.0 | < 0.001 |
| 40-49 | 36.1 (26.7-39.1) | 95.1 | 74.5 | 44.5 | 20.9 | 0 | 0 | ||
| 50-59 | 41.8 (33.1-47.2) | 93.2 | 73.5 | 60.3 | 28.7 | 28.7 | 0 | ||
| 60-69 | 24.4 (19.0-28.5) | 85.1 | 48.9 | 22.8 | 22.8 | 0 | 0 | ||
| ≥ 70 | 22.3 (15.5-30.7) | 81.0 | 34.2 | 11.4 | 0 | 0 | 0 | ||
| Family history | Yes | 30.7 (23.8-52.8) | 92.2 | 66.8 | 39.7 | 31.7 | 23.8 | 0 | 0.86 |
| No | 35.5 (30.4-37.6) | 90.5 | 67.5 | 48.0 | 30.6 | 22.5 | 18.7 | ||
| Residence | Urban | 34.7 (26.9-36.8) | 90.0 | 63.1 | 45.0 | 28.1 | 19.3 | 19.3 | 0.073 |
| Rural | 36.7 (31.2-37.1) | 92.1 | 75.8 | 51.4 | 34.6 | 25.9 | 17.3 | ||
| Marital status | Single | 42.0 (36.5-54.3) | 95.6 | 81.9 | 67.2 | 45.2 | 9.0 | 0 | 0.0002 |
| Married | 36.1 (28.9-40.3) | 91.2 | 68.1 | 45.0 | 33.0 | 26.4 | 26.1 | ||
| Widowed | 29.3 (17.0-37.6) | 80.3 | 53.6 | 28.7 | 19.2 | 0 | 0 | ||
| Divorced | 24.4 (18.5-31.2) | 86.7 | 47.7 | 10.5 | 0 | 0 | 0 | ||
| Insurance | Free paid | 36.5 (29.8-44.6) | 92.2 | 71.7 | 50.5 | 33.2 | 14.2 | 0 | 0.187 |
| Paid | 31.3 (27.0-36.8) | 89.2 | 63.5 | 43.9 | 30.0 | 18.9 | 18.9 | ||
| Smoking status | Yes | 23.3 (20.4-25.9) | 86.7 | 47.6 | 19.9 | 13.4 | 0 | 0 | < 0.001 |
| No | 38.3 (36.1-45.3) | 92.0 | 74.2 | 57.4 | 38.5 | 23.1 | 27.7 | ||
| Alcohol | Yes | 25.6 (22.6-30.7) | 89.5 | 54.1 | 32.1 | 17.7 | 6.3 | 0 | < 0.001 |
| consumption | No | 40.3 (36.1-52.8) | 91.5 | 76.1 | 57.3 | 41.8 | 28.1 | 28.1 | |
| Body mass index | < 18.5 | 31.3 (25.2-45.3) | 92.9 | 64.3 | 47.4 | 14.8 | 0 | 0.99 | |
| (kg/m2) | 18.5-24.9 | 34.8 (29.3-37.1) | 90.7 | 68.5 | 46.5 | 30.9 | 19.2 | 19.2 | |
| 25.0-29.9 | 36.6 (17.8-…) | 84.4 | 72.4 | 30.9 | 0 | 0 | 0 | ||
| ≥ 30.0 | |||||||||
| Comorbidity | Yes | 23.2 (18.3-25.9) | 87.0 | 45.3 | 21.7 | 8.2 | 2.7 | 0 | < 0.001 |
| No | 44.6 (36.8-52.8) | 92.2 | 77.3 | 60.9 | 43.7 | 30.8 | 30.8 |
The total number of 621 subjects were selected from patients registered between January 1, 2013 and December 30, 2017 with follow-up until December 30, 2018. Values are presented as percent only. TASH, Tikur Anbessa Specialized Hospital.