Table 4.
Indicators of clinical consistency of questionnaire for epidemiological screening of hyposalivation using different cutoff points
| Cutoff point | Sensitivity (95% CI) | Specificity (95% CI) | Accuracy (95% CI) | LR+ | LR– | PV+ | PV– |
|---|---|---|---|---|---|---|---|
| ≥1 | 64.8 (56.9–72.1) | 48.3 (41.9–54.9) | 55.0 (50.0–59.9) | 1.25 | 0.73 | 45.9 | 67.1 |
| ≥2 | 45.1 (37.2–53.1) | 70.8 (64.6–76.5) | 60.5 (55.5–65.3) | 1.54 | 0.78 | 51.0 | 65.6 |
| ≥3 | 27.2 (20.5–34.7) | 85.8 (80.8–90.0) | 62.2 (57.3–67.0) | 1.92 | 0.85 | 56.4 | 63.6 |
| ≥4 | 16.7 (11.3–23.3) | 91.7 (87.4–94.8) | 61.4 (56.5–66.2) | 2.00 | 0.91 | 57.4 | 62.0 |
| ≥5 | 9.9 (5.8–15.5) | 96.3 (93.0–98.3) | 61.4 (56.5–66.2) | 2.63 | 0.94 | 64.0 | 61.3 |
| ≥6 | 3.7 (1.4–7.9) | 98.8 (96.4–99.7) | 60.5 (55.5–65.3) | 2.96 | 0.98 | 66.7 | 60.3 |
| ≥7 | 1.2 (0.1–4.4) | 99.6 (97.7–100.0) | 60.0 (55.0–64.8) | 2.96 | 0.99 | 66.7 | 59.9 |
CI, confidence interval; LR, likelihood ratio; PV, predictive value.
Best cutoff point (that with highest sensitivity) in bold type.