Table 2.
One-, 3-, and 5-year survival rates and median survival time for CRC patients.
| Variables | N | Survival rates (%) [95% CI] |
Median survival time (months) | a p-Value | ||
|---|---|---|---|---|---|---|
| 1-year | 3-year | 5-year | ||||
| Overall | 5,675 | 68.5 [66.9–70.0] | 34.7 [32.6–36.7] | 18.4 [16.2–20.9] | 24 | |
| Sex | 0.235 | |||||
| Male | 3,174 | 67.5 [65.4–69.5] | 34.5 [31.8–37.2] | 17.2 [14.1–20.5] | 23 | |
| Female | 2,501 | 69.6 [67.3–71.9] | 34.8 [31.8–38.0] | 20.0 [16.5–23.6] | 24 | |
| Age group | <0.001 | |||||
| <80 | 3,444 | 72.5 [70.6–74.4] | 38.3 [35.6–41.0] | 19.8 [16.7–23.2] | 27 | |
| ≥80 | 2,231 | 62.4 [59.8–64.9] | 29.5 [26.5–32.5] | 16.4 [13.3–19.9] | 20 | |
| Ethnic groups | <0.001 | |||||
| Malays | 2,342 | 65.1 [62.6–67.4] | 32.0 [29.0–35.0] | 19.3 [15.8–23.2] | 22 | |
| Chinese | 2,685 | 69.6 [67.2–71.8] | 34.2 [31.2–37.1] | 14.6 [11.6–18.0] | 24 | |
| Indians | 349 | 73.4 [66.8–78.9] | 40.8 [32.1–49.2] | 21.8 [13.0–32.0] | 27 | |
| Others | 299 | 80.8 [74.2–85.9] | 56.4 [45.9–65.7] | 46.3 [33.5–58.1] | 49 | |
| Stages at diagnosis | <0.001 | |||||
| 0 | 254 | 80.6 [73.6–85.9] | 69.6 [60.9–76.7] | 51.1 [37.9–62.9] | 63 | |
| I | 329 | 82.9 [76.2–87.9] | 53.0 [40.4–64.1] | 26.5 [14.2–40.5] | 41 | |
| II | 1,020 | 83.0 [79.5–86.0] | 52.8 [46.6–58.6] | 31.0 [23.4–38.8] | 40 | |
| III | 1,833 | 78.5 [75.8–81.0] | 39.2 [35.2–43.2] | 21.2 [16.7–26.0] | 30 | |
| IV | 2,239 | 54.5 [52.1–56.9] | 21.6 [19.2–24.0] | 9.0 [6.6–11.9] | 14 | |
| Cancer sites | 0.410 | |||||
| Colon | 2,930 | 68.9 [66.7–71.0] | 36.0 [33.2–38.8] | 18.9 [15.8–22.2] | 24 | |
| Rectosigmoid | 889 | 66.0 [61.9–69.7] | 34.3 [29.4–39.3] | 17.4 [12.2–23.4] | 23 | |
| Rectum | 1,856 | 68.9 [66.2–71.5] | 32.5 [28.9–36.1] | 18.3 [14.0–23.0] | 23 | |
| Treatment status | 0.003 | |||||
| Not received | 1,016 | 59.7 [56.1–63.1] | 36.3 [32.3–40.3] | 24.0 [19.3–29.0] | 18 | |
| Received | 4,659 | 70.7 [68.9–72.4] | 33.9 [31.6–36.2] | 16.6 [14.0–19.3] | 25 | |
| Treatment modalities | <0.001 | |||||
| None | 1,016 | 59.7 [56.1–63.1] | 36.3 [32.3–40.3] | 24.0 [19.3–29.0] | 18 | |
| Surgery | 2,013 | 67.6 [64.7–70.2] | 33.7 [30.1–37.4] | 16.0 [12.2–20.2] | 24 | |
| Chemotherapy | 540 | 64.4 [58.8–69.4] | 27.6 [21.3–34.3] | 11.3 [5.4–19.7] | 19 | |
| Radiotherapy | 117 | 62.5 [50.3–72.5] | 23.4 [12.0–37.0] | 16.7 [6.9–30.3] | 19 | |
| Others | 221 | 54.6 [46.3–62.2] | 21.2 [13.5–30.2] | 9.7 [3.9–18.9] | 15 | |
| Combined | 1,768 | 78.2 [75.6–80.5] | 38.0 [34.2–41.8] | 19.9 [15.7–24.5] | 29 | |
CI, confidence interval; CRC, colorectal cancer.
a
Log-rank test, significant at p <0.05 (bold).