Table 4. Trends in mean blood pressure and prevalence of uncontrolled hypertension in the South African adult population (aged 15 years and over) between 2008 and 2014–15.
Comparison between observed and counterfactual trends in absence of antihypertensive treatment, by age group and gender. (Regression coefficients and standard errors).
| Women | Men | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Systolic [mm Hg / year] |
Diastolic [mm Hg / year] |
HTN [% / year] |
Systolic [mm Hg / year] |
Diastolic [mm Hg / year] |
HTN [% / year] |
|||||||
| Age group [years] |
βo (se) | βu (se) | βo (se) | βu (se) | ORo (se) | ORu (se) | βo (se) | βu (se) | βo (se) | βu (se) | ORo (se) | ORu (se) |
| 15–24 | -0.86 (0.08) | -0.86 (0.08) | -0.17 (0.07) | -0.18 (0.07) | 0.92 (0.02) | 0.92 (0.02) | -0.41 (0.1) | -0.41 (0.1) | -0.03 (0.08) | -0.02 (0.08) | 0.95 (0.03) |
0.95 (0.03) |
| 25–34 | -0.84 (0.10) | -0.83 (0.10) | -0.11 (0.07) | -0.11 (0.08) | 0.97 (0.02) | 0.98 (0.02) | -0.23 (0.12) | -0.23 (0.12) | 0.20 (0.08) |
0.20 (0.08) | 1.01 (0.03) |
1.01 (0.03) |
| 35–44 | -0.96 (0.16) | -0.90 (0.17) | -0.24 (0.12) | -0.20 (0.12) | 0.94 (0.02) | 0.96 (0.02) | -0.07 (0.18) | -0.02 (0.17) | 0.30 (0.11) | 0.33 (0.11) | 1.00 (0.02) |
1.00 (0.02) |
| 45–54 | -0.71 (0.17) | -0.6 (0.18) | -0.1 (0.11) | 0.00 (0.12) | 0.96 (0.02) | 0.98 (0.02) | -0.82 (0.2) | -0.67 (0.21) | -0.02 (0.12) | 0.08 (0.13) | 0.98 (0.02) |
1.00 (0.02) |
| 55–64 | -1.09 (0.24) | -0.49 (0.23) | -0.38 (0.14) | -0.01 (0.14) | 0.93 (0.02) | 1.00 (0.02) | -0.64 (0.29) | -0.31 (0.32) | -0.16 (0.17) | 0.06 (0.19) | 0.96 (0.03) |
0.99 (0.03) |
| 65+ | -1.07 (0.29) | -0.15 (0.27) | -0.81 (0.17) | -0.06 (0.15) | 0.93 (0.02) | 1.04 (0.03) | -0.63 (0.36) | -0.04 (0.35) | -0.35 (0.20) | 0.11 (0.20) | 0.94 (0.03) |
1.00 (0.03) |
| 15+ | -0.81 (0.07) | -0.62 (0.07) | -0.19 (0.05) | -0.06 (0.05) | 0.96 (0.01) | 0.99 (0.01) | -0.34 (0.08) | -0.24 (0.08) | 0.10 (0.05) | 0.17 (0.05) | 0.99 (0.01) |
1.00 (0.01) |
Βo/βu = linear regression slope for the observed/counterfactual trend; ORo/ORu = relative odds of uncontrolled hypertension for each successive year of observation in the observed/counterfactual scenario.