Table 2.
Univariate analysis of risk factors for CHD and stroke
| Characteristics | CHD, n (%) | Stroke, n (%) | ||||||
| Yes | No | χ2 | P value | Yes | No | χ2 | P value | |
| Total | 10 654 | 715 053 | 15 989 | 709 718 | ||||
| Sex (male) | 4125 (28.72) | 335 023 (46.85) | 279.078 | ＜0.001 | 8110 (50.72) | 331 038 (46.64) | 104.502 | ＜0.001 |
| Region (rural) | 4379 (41.10) | 376 985 (52.72) | 568.386 | ＜0.001 | 8515 (53.26) | 372 849 (52.53) | 3.256 | 0.071 |
| Age | 4657.234 | ＜0.001 | 6926.216 | ＜0.001 | ||||
| 40~ | 687 (6.45) | 223 486 (31.25) | 913 (5.71) | 223 260 (31.46) | ||||
| 50~ | 2324 (21.81) | 210 676 (29.46) | 3539 (22.13) | 209 461 (29.51) | ||||
| 60~ | 4209 (39.51) | 168 571 (23.57) | 6644 (41.55) | 166 136 (23.41) | ||||
| 70~ | 2767 (25.97) | 83 708 (11.71) | 3915 (24.49) | 82 560 (11.63) | ||||
| 80~ | 667 (6.26) | 28 612 (4.00) | 978 (6.12) | 28 301 (3.99) | ||||
| BMI | 2767.767 | ＜0.001 | 2261.651 | ＜0.001 | ||||
| ＜18.5 | 207 (1.94) | 16 101 (2.25) | 322 (2.01) | 15 986 (2.25) | ||||
| 18.5~24 | 3420 (32.10) | 376 623 (52.67) | 5875 (36.74) | 374 168 (52.72) | ||||
| 24~28 | 4588 (43.06) | 259 797 (36.33) | 6841 (42.79) | 257 544 (36.29) | ||||
| ≥28 | 2439 (22.89) | 62 532 (8.75) | 2951 (18.46) | 62 020 (8.74) | ||||
| Smoking | 2628 (24.67) | 45 369 (6.34) | 5705.550 | ＜0.001 | 4416 (27.62) | 43 581 (6.14) | 11 679.211 | ＜0.001 |
| Regular drinking | 1551 (14.56) | 23 388 (3.27) | 4030.177 | ＜0.001 | 2484 (17.81) | 22 455 (3.16) | 7212.358 | ＜0.001 |
| Lack of exercise | 4269 (40.07) | 55 443 (7.75) | 14 518.060 | ＜0.001 | 6013 (37.61) | 53 699 (7.57) | 18 687.903 | ＜0.001 |
| Hypertension | 8614 (80.85) | 112 667 (15.76) | 31 958.204 | ＜0.001 | 13 182 (82.44) | 108 099 (15.23) | 50 750.234 | ＜0.001 |
| Diabetes | 3565 (33.46) | 36 187 (5.06) | 16 353.881 | ＜0.001 | 4118 (25.75) | 35 634 (5.02) | 12 983.573 | ＜0.001 |
| Dyslipidaemia | 6883 (64.60) | 106 276 (14.86) | 19 734.787 | ＜0.001 | 8982 (56.18) | 104 177 (14.68) | 20 458.912 | ＜0.001 |
| AF | 397 (3.73) | 2386 (0.33) | 3162.834 | ＜0.001 | 387 (2.42) | 2396 (0.34) | 1775.677 | ＜0.001 |
| TIA | 1409 (13.23) | 11 875 (1.66) | 7812.480 | ＜0.001 | 2504 (15.66) | 10 780 (1.52) | 17 402.607 | ＜0.001 |
| Family history of CHD | 2762 (25.92) | 10 315 (1.44) | 35 557.668 | ＜0.001 | 1808 (11.31) | 11 269 (1.59) | 8348.822 | ＜0.001 |
| Family history of stroke | 3061 (28.73) | 27 042 (3.78) | 16 434.360 | ＜0.001 | 6069 (37.96) | 24 034 (3.39) | 47 002.257 | ＜0.001 |
AF, atrial fibrillation; BMI, body mass index; CHD, coronary heart disease; TIA, transient ischaemic attack.