Table 3.
Test Characteristics of CXR and LUS vs. Nasopharyngeal RT-PCR
| CXR with Atelectasis | CXR without Atelectasis | LUS | LUS Expert Review | Pleural Line Irregularity | |
|---|---|---|---|---|---|
| Sensitivity | 67.2 (4.31–78.4) | 56.3 (43.3–68.6) | 96.9 (89.2–99.6) | 100 (94.4–100) | 26.6 (16.3–39.1) |
| Specificity | 29.7 (15.9–47.0) | 43.2 (27.1–60.5) | 13.5 (4.54–28.8) | 13.5 (4.54%–28.8) | 70.3 (53.0–84.1) |
| Positive likelihood ratio | 0.96 (0.73–1.25) | 0.99 (0.70–1.41) | 1.12 (0.98–1.28) | 1.16 (1.02–1.31) | 0.89 (0.47–1.70) |
| Negative likelihood ratio | 1.10 (0.60–2.02) | 1.01 (0.64–1.61) | 0.23 (0.05–1.13) | 0.00 | 1.05 (0.81–1.35) |
| Odds ratio | 0.87 (0.36–2.08) | 0.98 (0.43–2.22) | 4.84 (0.89–26.4) | 21.8 (1.17–407.1) | 0.85 (0.35–2.10) |
| Positive predictive value | 62.0 (55.4–68.1) | 62.8 (54.2–70.6) | 65.6 (62.5–68.6) | 66.3 (63.4–69.1) | 60.3 (44.5–74.3) |
| Negative predictive value | 34.7 (22.5–49.4) | 36.7 (26.78–48.0) | 71.8 (34.1–92.6) | 100 | 36.0 (30.3–42.1) |
Data are presented as percentages with 95% confidence intervals.
CXR = single view, portable anteroposterior chest x-ray study; LUS = eight-zone point-of-care lung ultrasound; RT-PCR = nasopharyngeal reverse-transcription polymerase chain reaction swab.