Table 2.
Prevalence of hypertension and subgroups.
| No. studies | No. positive | No. examined | % (95% CI) | Heterogeneity | ||||
|---|---|---|---|---|---|---|---|---|
| χ 2 | p-value | I 2 | ||||||
| Sex | Male | 25 | 15,810 | 8,280 | 51% (45–56) | 1397.6 | <0.00001 | 98% |
| Female | 25 | 17,175 | 9,579 | 53% (47–60) | 1918.6 | <0.00001 | 99% | |
| Sampling time | 2000–2010 | 20 | 41,454 | 20,482 | 50% (44–56) | 2448.9 | <0.00001 | 99% |
| 2011–2020 | 29 | 49,700 | 23,670 | 45% (39–50) | 4332.9 | <0.00001 | 99% | |
| Geographical distribution | Central China | 3 | 6,908 | 4,141 | 59% (55–62) | 10.9 | 0.004 | 98% |
| East China | 14 | 28,374 | 16,364 | 53% (47–59) | 1185.2 | <0.00001 | 99% | |
| North China | 11 | 18,817 | 9,542 | 49% (40–58) | 1315.9 | <0.00001 | 99% | |
| Northwest China | 5 | 12,837 | 5,958 | 47% (36–58) | 663.2 | <0.00001 | 99% | |
| South China | 6 | 5,306 | 2,500 | 43% (28–58) | 617.3 | <0.00001 | 99% | |
| Northeast China | 4 | 2,353 | 1,141 | 40% (23–57) | 146.6 | <0.00001 | 98% | |
| Southwest China | 6 | 9,834 | 3,295 | 33% (21–44) | 681.0 | <0.00001 | 99% | |
| Region | Urban | 34 | 49,471 | 23,650 | (47% 42–51) | 3667.9 | <0.00001 | 99% |
| Rural | 13 | 26,591 | 10,923 | 43% (34–51) | 2489.1 | <0.00001 | 100% | |