Table 2.
Differences of demographic and clinical characteristics between the training and testing sets.
| Variables | Entire cohort | Training set | Testing set | p value |
|---|---|---|---|---|
| (n = 386) | (n = 114) | (n = 272) | ||
| CRCI | ||||
| No | 269 (69.69) | 79 (69.30) | 190 (69.85) | 0.994 |
| Yes | 117 (30.31) | 35 (30.70) | 82 (30.15) | |
| Age | 64.73 ± 10.8 | 63.78 ± 9.11 | 65.13 ± 10.45 | 0.23 |
| Gender | 0.051 | |||
| Female | 189 (48.96) | 44 (38.60) | 145 (53.31) | |
| Male | 197 (51.04) | 70 (61.40) | 127 (46.69) | |
| BMI | 25.52 ± 3.34 | 25.70 ± 3.43 | 25.44 ± 3.31 | 0.49 |
| Waist | 87.42 ± 9.31 | 87.13 ± 9.94 | 87.54 ± 9.05 | 0.692 |
| Heart rate | 72.90 ± 8.96 | 71.91 ± 9.08 | 73.32 ± 8.90 | 0.161 |
| Smoking history | 0.08 | |||
| No | 284 (73.58) | 75 (65.79) | 209 (76.84) | |
| Yes | 102 (26.42) | 39 (34.21) | 63 (23.16) | |
| Education level | 0.465 | |||
| Higher education | 93 (24.09) | 29 (25.44) | 64 (23.53) | |
| Primary education or below | 149 (38.60) | 36 (31.58) | 113 (41.54) | |
| Secondary education | 144 (37.31) | 49 (42.98) | 95 (34.93) | |
| Marital status | 0.73 | |||
| Single or divorce | 116 (30.05) | 31 (27.19) | 85 (31.25) | |
| Married | 270 (69.95) | 83 (72.81) | 187 (68.75) | |
| Medical insurance | 0.444 | |||
| Commercial insurance payment | 62 (16.06) | 17 (14.91) | 45 (16.54) | |
| Social security payments | 298 (77.20) | 85 (74.56) | 213 (78.31) | |
| Self-paying | 26 (6.74) | 12 (10.53) | 14 (5.15) | |
| Homeplace | 0.947 | |||
| Rural areas | 130 (33.68) | 37 (32.46) | 93 (34.19) | |
| Urban areas | 256 (66.32) | 77 (67.54) | 179 (65.81) | |
| Per capita monthly household income | 0.961 | |||
| 2001-5000 yuan per month | 193 (50.00) | 60 (52.63) | 133 (48.90) | |
| <2000 yuan per month | 76 (19.69) | 20 (17.54) | 56 (20.59) | |
| >5000 yuan per month | 117 (30.31) | 34 (29.82) | 83 (30.51) | |
| Depression | 0.945 | |||
| No | 232 (60.10) | 70 (61.40) | 162 (59.56) | |
| Yes | 154 (39.90) | 44 (38.60) | 110 (40.44) | |
| Drinking | 0.556 | |||
| No | 295 (76.42) | 83 (72.81) | 212 (77.94) | |
| Yes | 91 (23.58) | 31 (27.19) | 60 (22.06) | |
| Diet | 0.576 | |||
| Balanced diet | 124 (32.12) | 37 (32.46) | 87 (31.99) | |
| Carnivorous | 137 (35.49) | 34 (29.82) | 103 (37.87) | |
| Vegetarian | 125 (32.38) | 43 (37.72) | 82 (30.15) | |
| Exercise | 0.27 | |||
| Less than 3 times a week | 183 (47.41) | 44 (38.60) | 139 (51.10) | |
| More than 3 times a week | 70 (18.13) | 23 (20.18) | 47 (17.28) | |
| No | 133 (34.46) | 47 (41.23) | 86 (31.62) | |
| Diabetes | 0.507 | |||
| No | 293 (75.91) | 91 (79.82) | 202 (74.26) | |
| Yes | 93 (24.09) | 23 (20.18) | 70 (25.74) | |
| Hypertension | 0.992 | |||
| No | 249 (64.51) | 73 (64.04) | 176 (64.71) | |
| Yes | 137 (35.49) | 41 (35.96) | 96 (35.29) | |
| Hypercholesterolemia | 0.441 | |||
| No | 219 (56.74) | 59 (51.75) | 160 (58.82) | |
| Yes | 167 (43.26) | 55 (48.25) | 112 (41.18) | |
| Pathological stage | 0.771 | |||
| No | 187 (48.45) | 52 (45.61) | 135 (49.63) | |
| Yes | 199 (51.55) | 62 (54.39) | 137 (50.37) | |
| Colostomy | 0.953 | |||
| No | 325 (84.20) | 97 (85.09) | 228 (83.82) | |
| Yes | 61 (15.80) | 17 (14.91) | 44 (16.18) | |
| CRA | 0.649 | |||
| No | 64 (16.58) | 22 (19.30) | 42 (15.44) | |
| Yes | 322 (83.42) | 92 (80.70) | 230 (84.56) | |
| Complications | 0.655 | |||
| No | 336 (87.05) | 102 (89.47) | 234 (86.03) | |
| Yes | 50 (12.95) | 12 (10.53) | 38 (13.97) | |
| Tumor location | 1 | |||
| Left hemicolon | 90 (23.32) | 27 (23.68) | 63 (23.16) | |
| Rectum | 153 (39.64) | 44 (38.60) | 109 (40.07) | |
| Right hemicolon | 91 (23.58) | 27 (23.68) | 64 (23.53) | |
| Transverse colon | 52 (13.47) | 16 (14.04) | 36 (13.24) | |
| PSQI | 6.83 ± 3.60 | 6.65 ± 3.64 | 6.91 ± 3.58 | 0.514 |
| Social Impact Scale | 62.42 ± 8.06 | 63.61 ± 8.53 | 61.92 ± 7.81 | 0.06 |
| Total score QLQ-C30 | 56.20 ± 11.98 | 55.61 ± 12.19 | 56.44 ± 11.91 | 0.533 |