General characteristics of the CNSSS
| Characteristics | Total, n (%) | Sex, n (%) | Region, n (%) | P value for sex | P value for region | ||
| Female | Male | Urban | Rural | ||||
| Age, years | 57.23±11.40 | 57.40±11.38 | 57.03±11.41 | 57.26±11.50 | 57.20±11.30 | ＜0.001 | 0.029 |
| 40~ | 224 173 (30.89) | 115 964 (30.00) | 108 209 (31.91) | 106 788 (31.01) | 117 385 (30.78) | ＜0.001 | ＜0.001 |
| 50~ | 213 000 (29.35) | 115 023 (29.76) | 97 977 (28.89) | 101 240 (29.40) | 111 760 (29.31) | ||
| 60~ | 172 780 (23.81) | 93 393 (24.16) | 79 387 (23.41) | 79 411 (23.06) | 93 369 (24.48) | ||
| 70~ | 86 475 (11.92) | 46 161 (11.94) | 40 314 (11.89) | 42 716 (12.41) | 43 759 (11.47) | ||
| 80~ | 29 279 (4.03) | 16 018 (4.14) | 13 261 (3.91) | 14 188 (4.12) | 15 091 (3.96) | ||
| Height, cm | 162.96±8.12 | 158.26±6.31 | 168.31±6.48 | 163.95±7.91 | 162.06±8.20 | ＜0.001 | ＜0.001 |
| Weight, kg | 63.63±10.04 | 59.94±8.87 | 67.83±9.63 | 64.69±9.99 | 62.66±9.98 | ＜0.001 | ＜0.001 |
| BMI, kg/m2 | 23.91±3.04 | 23.92±3.20 | 23.90±2.85 | 24.02±3.00 | 23.81±3.07 | 0.130 | ＜0.001 |
| ＜18.5 | 16 308 (2.25) | 10 052 (2.60) | 6256 (1.84) | 6913 (2.01) | 9395 (2.46) | ＜0.001 | ＜0.001 |
| 18.5~24 | 380 043 (52.37) | 201 371 (52.09) | 178 672 (52.68) | 174 900 (50.79) | 205 143 (53.79) | ||
| 24~28 | 264 385 (36.43) | 136 843 (35.40) | 127 542 (37.61) | 131 176 (38.09) | 133 209 (34.93) | ||
| ≥28 | 64 971 (8.95) | 38 293 (9.91) | 26 678 (7.87) | 31 354 (9.11) | 33 617 (8.81) | ||
| Smoking | 47 997 (6.61) | 4163 (1.08) | 43 834 (12.92) | 20 223 (5.87) | 27 774 (7.28) | ＜0.001 | ＜0.001 |
| Regular drinking | 24 939 (3.44) | 2148 (0.56) | 22 791 (6.72) | 11 574 (3.36) | 13 365 (3.50) | ＜0.001 | 0.001 |
| Lack of exercise | 59 712 (8.23) | 33 104 (8.56) | 26 608 (7.85) | 31 722 (9.21) | 27 990 (7.34) | ＜0.001 | ＜0.001 |
| Hypertension | 121 281 (16.71) | 65 681 (16.99) | 55 600 (16.39) | 57 538 (16.71) | 63 743 (16.71) | ＜0.001 | 0.955 |
| Diabetes | 39 752 (5.48) | 22 283 (5.76) | 17 469 (5.15) | 21 770 (6.32) | 17 982 (4.72) | ＜0.001 | ＜0.001 |
| Dyslipidaemia | 113 159 (15.59) | 62 817 (16.25) | 50 342 (14.84) | 56 793 (16.55) | 56 186 (14.73) | ＜0.001 | ＜0.001 |
| AF | 2783 (0.38) | 1636 (0.42) | 1147 (0.34) | 1433 (0.42) | 1350 (0.35) | ＜0.001 | ＜0.001 |
| TIA | 13 284 (1.83) | 8199 (2.12) | 5085 (1.50) | 6707 (1.95) | 6577 (1.72) | ＜0.001 | ＜0.001 |
| Family history of CHD | 13 077 (1.80) | 7947 (2.06) | 5130 (1.51) | 8070 (2.34) | 5007 (1.31) | ＜0.001 | ＜0.001 |
| Family history of stroke | 30 103 (4.15) | 16 987 (4.39) | 13 116 (3.87) | 15 553 (4.52) | 14 550 (3.82) | ＜0.001 | ＜0.001 |
AF, atrial fibrillation; BMI, body mass index; CHD, coronary heart disease; CNSSS, China National Stroke Screening Survey; TIA, transient ischaemic attack.