Table 1. Distribution of demographic characteristics between discovery and validation groups.
| Variables | Discovery group(n= 446) | Validation group(n= 446) | Pb |
|---|---|---|---|
| Sex | 0.158 | ||
| Female | 163(36.55) | 143(32.06) | |
| Male | 283(63.45) | 303(67.94) | |
| Age (years) | 0.177 | ||
| <60 | 242(54.26) | 262(58.74) | |
| ≥60 | 204(45.74) | 184(41.26) | |
| BMI a (kg/m2) | 0.385 | ||
| 18.5-23.9 | 280(62.78) | 264(59.19) | |
| <18.5 | 71(15.92) | 86(19.28) | |
| ≥24 | 95(21.30) | 96(21.53) | |
| Occupation | 0.625 | ||
| Farmer | 174(39.02) | 184(41.26) | |
| Worker | 96(21.52) | 100(22.42) | |
| Staff and others | 176(39.46) | 162(36.32) | |
| Residence | 0.310 | ||
| Urban | 249(55.83) | 264(59.19) | |
| Rural | 197(44.17) | 182(40.81) | |
| Education level | 0.579 | ||
| Primary and below | 57(12.78) | 47(10.54) | |
| Middle school | 325(72.87) | 334(74.89) | |
| College and above | 64(14.35) | 65(14.57) | |
| Family history of cancer | 0.784 | ||
| No | 376(84.30) | 373(83.63) | |
| Yes | 70(15.70) | 73(16.37) |
a Body mass index (weight in kg/[height in m]2), BMI groups according to the classification criteria for Chinese adults; b Chi-square test