Table 2 Comparison between the conventional stethoscope and the Doppler Phonolyser in detection of congenital heart defects
From: Evaluation of the heart sounds in children using a Doppler Phonolyser
Total | Hearing | Phonolyser | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Hearing | Phonolyser | 0–1 month | 1–12 months | 12–72 months | Up to 72 | 0–1 month | 1–12 months | 12–72 months | Up to 72 | |
Sensitivity | 94.7% | 90.5% | 84.6% | 91.9% | 96.4% | 98.7% | 66.6% | 85.8% | 96.9% | 97.5% |
Specificity | 94.8% | 68.9% | 94.7% | 96.2% | 95.7% | 94% | 75.4% | 69.4% | 72.4% | 63% |
PPV | 91.6% | 63.3% | 91.6% | 92.8% | 91% | 98.7% | 65% | 60.3% | 65.2% | 97.5% |
NPV | 96.8% | 92.4% | 90% | 95.6% | 96.9% | 99.1% | 76% | 96.9% | 94% | 97.5% |
LR+ | 18.23 | 2.90 | 16.05 | 23.99 | 18.37 | 16.65 | 2.71 | 2.80 | 3.33 | 2.64 |
LR− | 0.055 | 0.13 | 0.16 | 0.08 | 0.03 | 0.01 | 0.044 | 0.20 | 0.11 | 0.04 |