Table S7.
Pooled relative risk and mean likelihood ratios for preterm birth, according to BP cut-offs at <20 weeks, determined by ACC/AHA BP categories
| COMPARATOR | ||||
|---|---|---|---|---|
| BP measured at <20 weeks | Ref | RR [95% CI] I2, (95% PI) | -LR | +LR |
| Diagnostic threshold: sBP 120mmHg (with dBP <80mmHg) | ||||
| Pooled | Normal (<120/80mmHg) |
1.2 [1.0, 1.5] I2=94%, (0.6, 2.5) |
0.95 [0.89, 1.00] | 1.21 [1.01, 1.43] |
| Bellad | 1.2 [1.0, 1.5] | 0.99 [0.97, 1.00] | 1.28 [1.03, 1.60] | |
| Greenberg | 1.6 [1.4, 1.8] | 0.84 [0.80, 0.88] | 1.41 [1.31, 1.52] | |
| Hu | 0.8 [0.7, 0.9] | 1.09[ 1.03, 1.15] | 0.86 [0.78, 0.96] | |
| Qureshi | 1.0 [0.9, 1.0] | 1.01 [0.99, 1.03] | 0.94 [0.83, 1.06] | |
| Reddy | 1.3 [1.1, 1.4] | 0.93 [0.89, 0.97] | 1.21 [1.10, 1.32] | |
| Rosner | 1.6 [0.9, 2.7] | 0.83 [0.65, 1.07] | 1.41 [0.96, 2.07] | |
| Sevene | 1.1 [0.8, 1.5] | 0.98 [0.93, 1.04] | 1.14 [0.74, 1.74] | |
| Sutton 2020 | 1.8 [1.6, 2.0] | 0.83 [0.79, 0.87] | 1.54 [1.42, 1.67] | |
| Diagnostic threshold: sBP 130mmHg or dBP 80mmHg | ||||
| Pooled LR | Normal + ElevatedBP (<130/80mmHg) |
1.5 [1.3, 1.8] I2=98%, (0.7, 3.3) |
0.91 [0.84, 0.96] | 1.49 [1.24, 1.77] |
| Bellad | 1.4 [1.1, 1.8] | 0.99 [0.98, 1.00] | 1.49 [1.11, 2.00] | |
| Bello | 2.0 [1.9, 2.1] | 0.85 [0.84, 0.86] | 1.83 [1.77, 1.90] | |
| Darwin | 2.3 [1.9, 2.8] | 0.77 [0.71, 0.84] | 2.04 [1.74, 2.40] | |
| Duffy | 1.2 [1.2, 1.3] | 0.95 [0.94, 0.95] | 1.18 [1.15, 1.21] | |
| Greenberg | 1.9 [1.7, 2.2] | 0.88 [0.85, 0.91] | 1.78 [1.59, 1.98] | |
| Hu | 0.8 [0.7, 1.0] | 1.05 [1.01, 1.09] | 0.86 [0.75, 0.99] | |
| Huai | 1.0 [0.6, 1.7] | 1.01 [0.82, 1.24] | 0.98 [0.66, 1.47] | |
| McLaren | 2.4 [1.2, 5.1] | 0.55 [0.31, 0.96] | 1.51 [1.16, 1.97] | |
| Qureshi | 1.0 [0.9, 1.2] | 1.00 [0.98, 1.01] | 1.04 [0.89, 1.22] | |
| Reddy | 1.4 [1.2, 1.7] | 0.94 [0.91, 0.97] | 1.38 [1.21, 1.58] | |
| Sabol | 2.2 [1.8, 2.6] | 0.78 [0.72, 0.84] | 1.99 [1.72, 2.30] | |
| Sevene | 1.1 [0.8, 1.7] | 0.99 [0.95, 1.03] | 1.21 [0.66, 2.22] | |
| Sutton 2020 | 2.3 [2.0, 2.6] | 0.87 [0.84, 0.90] | 2.12 [1.88, 2.40] | |
| Diagnostic threshold: sBP 140mmHg or dBP 90mmHg | ||||
| Pooled LR | Normal + Elevated BP +Stage 1 (<140/90mmHg) |
2.3 [2.0, 2.6] I2=82%, [1.1, 4.6] |
0.95 [0.89, 0.98] | 2.52 [2.04, 3.06] |
| Bello | 2.6 [2.5, 2.8] | 0.92 [0.91, 0.93] | 2.77 [2.60, 2.94] | |
| Bellad | 2.2 [1.4, 3.3] | 0.99 [0.99, 1.00] | 2.67 [1.46, 4.89] | |
| Darwin | 2.7 [2.2, 3.3] | 0.82 [0.77, 0.87] | 2.71 [2.20, 3.35] | |
| Greenberg | 2.5 [2.1, 2.9] | 0.90 [0.88, 0.93] | 2.46 [2.12, 2.85] | |
| Hu | 1.0 [0.7, 1.5] | 1.00 [0.98, 1.01] | 1.04 [0.73, 1.48] | |
| McLaren | 4.0 [2.2, 7.6] | 0.68 [0.51, 0.90] | 3.89 [2.15, 7.05] | |
| Qureshi | 1.6 [1.2, 2.0] | 0.99 [0.99, 1.00] | 2.14 [1.34, 3.43] | |
| Reddy | 2.4 [1.8, 3.3] | 0.98 [0.97, 0.99] | 2.66 [1.85, 3.82] | |
| Rosner | 2.1 [0.9, 4.7] | 0.94 [0.84, 1.04] | 2.25 [0.86, 5.85] | |
| Sabol | 2.7 [2.2, 3.2] | 0.83 [0.79, 0.87] | 2.93 [2.37, 3.62] | |
| Sevene | 1.3 [0.7, 2.4] | 0.99 [0.97, 1.01] | 1.48 [0.52, 4.21] | |
| Sutton 2020 | 3.2 [2.7, 3.7] | 0.89 [0.86, 0.91] | 3.19 [2.74, 3.72] | |
ACC (American College of Cardiology), AHA (American Heart Association), BP (blood pressure), dBP (diastolic BP), -LR (negative likelihood ratio), +LR (positive likelihood ratio), sBP (systolic BP), CI (confidence interval), PI (prediction interval)
Slade. The diagnostic accuracy of American College of Cardiology-American Heart Association blood pressure categories for identification of women and babies at risk. Am J Obstet Gynecol 2023.