Table 5. Study population who required pharmacotherapy using WHO/ISH chart at different threshold levels and single risk factor approach.
| Approach | Variant | Persons requiring drug therapy, n (%) | |||||
|---|---|---|---|---|---|---|---|
| Threshold CVD risk > 30% | Threshold CVD risk > 20% | ||||||
| Male | Female | Total | Male | Female | Total | ||
| WHO/ISH chart | Chart alone | 162 (6.5) | 185 (7.4) | 348 (13.9) | 279 (11.1) | 305 (12.2) | 584 (23.3) |
| Chart normal + BP ≥ 160/100 | 112 (4.5) | 82 (3.3) | 194 (7.7) | 85 (3.4) | 72 (2.9) | 157 (6.3) | |
| Chart normal + TC ≥ 8 | 12 (0.5) | 12 (0.5) | 24 (1.0) | 10 (0.4) | 9 (0.4) | 19 (0.8) | |
| Total | 287 (11.4) | 279 (11.1) | 566 (22.5)a | 374 (14.9) | 386 (15.4) | 760 (30.3)b | |
| Single risk | BP ≥ 140/90 | 148 (5.9) | 131 (5.2) | 279 (11.1) | 215 (8.6) | 221 (8.8) | 436 (17.4) |
| TC ≥ 6 | 27 (1.1) | 42 (1.7) | 69 (2.7) | 43 (1.7) | 70 (2.8) | 113 (4.5) | |
| Total | 175 (7.0) | 173 (6.9) | 348 (13.9) | 258 (10.3) | 291 (11.6) | 549 (21.9) | |
CVD: cardiovascular disease; WHO/ISH: World Health Organization/International Society of Hypertension;*BP: blood pressure; TC: total cholesterol. aChart with BP ≥ 160/100 mmHg and TC ≥ 8 vs. single risk factor, at > 30% threshold, χ2 = 23.2, p < 0.001; bChart with BP ≥ 160/100 mmHg and TC ≥ 8 vs single risk factor, at > 20% threshold, χ2 = 100.2, p < 0.001.