Table 1 Comparisons of demographic data among the three groups after clustering
Groups | Pre-disease group ( n = 77) | Mixed period group ( n = 54) | Disease group ( n = 310) | F/χ 2 | P | |
|---|---|---|---|---|---|---|
Variables | ||||||
Onset age (years) | 37.95 ± 11.391 | 27.57 ± 10.930 | 39.95 ± 18.598 | 23.877 | 0.000 | |
Age at enrolment (years) | 42.86 ± 11.482 | 34.56 ± 13.130 | 46.31 ± 18.927 | 21.759 | 0.000 | |
Confirmed time (months) | 32.72 | 16.61 | 33.88 | 5.960 | 0.051 | |
sex | male | 37(48.1%) | 22(40.7%) | 121(39.0%) | 2.077 | 0.354 |
female | 40(51.9%) | 32(59.3%) | 189(61.0%) | |||
Address | town | 61(79.2%) | 37(68.5%) | 240(77.4%) | 2.381 | 0.304 |
village | 16(20.8%) | 17(31.5%) | 70(22.6%) | |||
Marriage | single | 14(18.2%) | 27(50%) | 120(38.7%) | 16.046 | 0.000 |
married | 63(81.8%) | 27(50%) | 190(61.3%) | |||
Educational level | ≤ high school | 51(66.2%) | 27(50%) | 204(65.8%) | 5.196 | 0.074 |
≥ junior college | 26(33.8%) | 27(50%) | 106(34.2%) | |||
Stable income | no | 37(48.1%) | 28(51.9%) | 112(36.1%) | 7.165 | 0.028 |
yes | 40(51.9%) | 26(48.1%) | 198(63.9%) | |||
Comorbid hypertension | 10(13.0%) | 1(1.9%) | 90(29.0%) | 129.771 | 0.000 | |
Family history | 5(6.5%) | 10(18.5%) | 84(27.1%) | 20.274 | 0.000 | |