Table 3.
Scoring system for the prediction of pre-eclampsia
| Score | Sensitivity (95% CI) |
Specificity (95% CI) |
Correctly Classified | LR+ (95% CI) |
LR- (95% CI) |
|---|---|---|---|---|---|
| ≥1 | 80.2% (74.8–84.9) |
49.6% (47.8–51.4) |
52.0% | 1.6 (1.5–1.7) |
0.40 (0.31–0.51) |
| ≥2 | 36.4% (30.6–42.6) |
86.8% (85.6–88.0) |
82.8% | 2.8 (2.3–3.3) |
0.73 (0.67–0.80) |
| ≥3 | 9.3% (6.1–13.5) |
98.0% (97.4–98.5) |
91.0% | 4.6 (2.9–7.3) |
0.92 (0.89–0.96) |
| ≥4 | 3.5% (1.6–6.5) |
99.7% (99.5–99.9) |
92.1% | 13.1 (5.1–33.6) |
0.97 (0.95–0.99) |
| 5 | 0.8% (0.1–2.8) |
99.9% (99.8–100.0) |
92.1% | 23.3 (2.1–255.7) |
1.0 (0.98–1.01) |
LR= likelihood ratio; CI=confidence interval