Table 2 Comparison of clinical data between modeling groups and validation groups
Characteristic | Modeling group (n = 5040) | Validation group (n = 2160) | t/Z/χ2 | P |
|---|---|---|---|---|
Gender [n (%)] | 1.921a | 0.166 | ||
Male | 2559(50.77%) | 1091 (50.51%) | - | - |
Female | 2481(49.23%) | 1069 (49.49%) | ||
Age (year) | 1.919 | 0.055 | ||
35- | 1328(26.35%) | 555 (25.69%) | - | - |
≥ 60 | 3712(73.65) | 1605 (74.31%) | ||
Marital status | 1.901 | 0.073 | ||
Unmarried | 35(0.69%) | 12 (0.56%) | - | - |
Married | 4729(93.83%) | 2019 (93.47%) | ||
Divorced or widowed | 276(5.48%) | 129 (5.97%) | ||
Educational level | 1.906 | 0.068 | ||
Primary and below | 2585(51.29%) | 1105 (51.16%) | - | - |
Junior high school | 2354(46.71%) | 1011 (46.81%) | ||
High school | 73(1.45%) | 29 (1.34%) | ||
Junior college or above | 28(0.55%) | 15 (0.69%) | ||
Household category | 1.825 | 0.037 | ||
Nonrural | 530(10.52%) | 237 (10.97%) | - | - |
Rural | 4510(89.48%) | 1923 (89.03%) | ||