Category | Subcategory | Survey population (n, (%)) | Participants with stroke, % (95% CI) (n=233) | Participants at high risk of stroke, % (95% CI) (n=2630) |
Overall | 10 056 (100) | 2.32 (2.02 to 2.61) | 26.2 (25.3 to 27.0) | |
ASR | 2.11 (1.81 to 2.41) | 23.8 (27.2 to 29.1) | ||
Sex | Male | 4467 (44.4) | 2.64 (2.17 to 3.11) | 30.5 (29.1 to 31.8) |
Female | 5589 (55.6) | 2.06 (1.69 to 2.43) | 22.7 (21.6 to 23.8) | |
P value | <0.001 | 0.062 | <0.001 | |
Age (years) | 40–49 | 1896 (18.9) | 0.90 (0.47 to 1.32) | 20.1 (18.3 to 21.9) |
50–59 | 3105 (30.9) | 1.55 (1.11 to 1.98) | 26.5 (25.0 to 28.1) | |
60–69 | 2549 (25.3) | 2.43 (1.83 to 3.03) | 27.4 (25.7 to 29.1) | |
70–79 | 1859 (18.5) | 3.93 (3.04 to 4.81) | 28.1 (26.0 to 30.1) | |
≥80 | 647 (6.4) | 5.10 (3.40 to 6.80) | 31.7 (28.1 to 35.3) | |
P value | <0.001 | <0.001 | <0.001 | |
Residence | Low-altitude | 3051 (30.3) | 1.67 (1.21 to 2.13) | 24.2 (22.7 to 25.7) |
Mid-altitude | 4869 (48.4) | 2.14 (1.73 to 2.54) | 30.0 (28.6 to 31.2) | |
High-altitude | 2136 (21.2) | 3.65 (2.86 to 4.44) | 20.4 (18.7 to 22.1) | |
P value | <0.001 | <0.001 | <0.001 | |
Ethnicity | Han | 6610 (65.7) | 1.98 (1.65 to 2.32) | 28.1 (27.0 to 29.1) |
Tibetan | 2260 (22.5) | 3.63 (2.86 to 4.40) | 20.8 (19.2 to 22.5) | |
Hui | 802 (8.0) | 1.50 (0.66 to 2.34) | 23.3 (20.4 to 26.2) | |
Others | 384 (3.8) | 2.08 (0.65 to 3.51) | 30.5 (25.9 to 35.1) | |
P value | <0.001 | <0.001 | <0.001 |
P values were calculated with the Rao-Scott-χ2 test and were intragroup comparisons of the surveyed population/participants with stroke/participants at high risk of stroke were calculated with the Rao-Scott-χ2 test.
ASR, age-standardised rates for the Chinese population 2010.