Table 3.
The clinicians’ diagnostic accuracy and interrater reliability in identifying community-acquired pneumonia on ultralow-dose CT
| Diagnostic accuracy parameters | Inter-rater reliability | |||||
|---|---|---|---|---|---|---|
| Sensitivity % (95% CI) | Specificity % (95% CI) | PPV % (95% CI) | NPV % (95% CI) | Kappaa (95% CI) | Percentage agreement % (95% CI) | |
| All clinicians (n = 10) | 83 (77–88) | 70 (59–81) | 80 (74–84) | 78 (73–82) | 0.54 (0.46–0.61) | 78 (74–81) |
| Junior cliniciansb (n = 5) | 86 (79–91) | 72 (60–81) | 80 (74—85) | 80 (75—84) | 0.61 (0.52—0.69) | 82 (77–86) |
| Consultantsc (n = 5) | 81 (68–89) | 70 (47–86) | 79 (68–87) | 76 (68–83) | 0.45 (0.36–0.54) | 74 (69–78) |
CI: Confidence interval. PPV: Positive predictive value. NPV: Negative predictive value
aConger’s kappa, a generalization for multiple raters [18]
bLess than one year post graduate
cWithin internal and/or emergency medicine