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Table 2 Findings from the 13 clinical trials (17 patient groups) included in this meta-analysis
| Decrement in blood pressure with drug treatment (mm Hg) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Systolic | Diastolic | ||||||||||
| Trial | Standardized mean dose (mg/d) | White mean | Black mean | White-black difference | White SD | Black SD | White mean | Black mean | White-black difference | White SD | Black SD |
| 1 | 20 | 14.7 | 9.1 | 5.6 | 15.6 | 14.7 | 10.7 | 7.9 | 2.8 | 7.8 | 8.6 |
| 2 | 20 | 10.8 | 0.7 | 10.1 | 16.4 | 3.6 | 9 | 4.1 | 4.9 | 9.1 | 11.6 |
| 3 | 5 | * | * | * | * | * | 8 | 1.5 | 6.5 | 15.1 | 11.7 |
| 4a | 16 | 11 | 8 | 3 | 9 | 11 | 10 | 9 | 1 | 7 | 7 |
| 4b | 16 | 11 | 7 | 4 | 9 | 12 | 11 | 7 | 4 | 5 | 7 |
| 5a | 10 | 12.8 | 2.7 | 10.1 | 15 | 13.9 | 6.1 | 2 | 4.1 | 4.3 | 4.8 |
| 5b | 20 | 9.6 | 2.5 | 7.1 | 15 | 13.1 | 8.1 | 3.8 | 4.3 | 5.1 | 5.2 |
| 5c | 40 | 9.1 | 11.9 | -2.8 | 13.8 | 13.4 | 8.9 | 6.5 | 2.4 | 4.4 | 5.3 |
| 6 | 20 | * | * | * | * | * | 11.8 | 6.2 | 5.6 | 7.8 | 10 |
| 7 | 24 | 14.1 | 7.8 | 6.3 | 10.2 | 14.4 | 10.2 | 6.2 | 4 | 6.2 | 11.5 |
| 8a | 20 | 13.4 | 8.5 | 4.9 | 16.3 | 12.9 | 9.8 | 7.3 | 2.5 | 8.1 | 7.5 |
| 8b | 40 | 16.8 | 12.3 | 4.5 | 18.5 | 20 | 12 | 10.1 | 1.9 | 8.5 | 11.3 |
| 9 | 30 | 5.9 | 9.2 | -3.3 | 13.7 | 11.9 | 2.2 | 3.1 | - 0.9 | 8.1 | 11.7 |
| 10 | 18 | 18.2 | 14.3 | 3.9 | 16.3 | 17.3 | 10.6 | 9 | 1.6 | 9.6 | 10.5 |
| 11 | * | 15.3 | 10.6 | 4.7 | 12.2 | 13.4 | 9.8 | 7.4 | 2.4 | 7.8 | 7.8 |
| 12 | 40 | 11 | 5 | 6 | 14.2 | 15.3 | 7 | 3 | 4 | 7.8 | 8.7 |
| 13 | 15 | 9.5 | 0.9 | 8.6 | 15.8 | 19.9 | * | * | * | * | * |
