Table 2 Sensitivity & Specificity compared to culture, stratified by HIV status
From: Chest radiograph reading and recording system: evaluation in frontline clinicians in Zambia
HIV Positive | HIV Negative | |||||||
|---|---|---|---|---|---|---|---|---|
n = 30 culture-confirmed TB; 170 no TBa | n = 44 culture-confirmed TB; 259 no TB | |||||||
Abnormalities consistent with TB | Any abnormality | Abnormalities consistent with TB | Any abnormality | |||||
Sensitivity | Specificity | Sensitivity | Specificity | Sensitivity | Specificity | Sensitivity | Specificity | |
CRRS-certified medical officers | ||||||||
Reader 1 | 0.57 | 0.61 | 0.63 | 0.50 | 0.61 | 0.59 | 0.70 | 0.47 |
(0.37–0.75) | (0.53–0.68) | (0.44–0.80) | (0.42–0.58) | (0.45–0.76) | (0.53–0.65) | (0.54–0.83) | (0.41–0.54) | |
Reader 2 | 0.50 | 0.60 | 0.50 | 0.59 | 0.55 | 0.61 | 0.55 | 0.60 |
(0.31–0.69) | (0.52–0.67) | (0.31–0.69) | (0.51–0.66) | (0.39–0.70) | (0.55–0.67) | (0.39–0.70) | (0.54–0.66) | |
CRRS-oriented clinical officers | ||||||||
Reader 3 | 0.67 | 0.42 | 0.77 | 0.38 | 0.68 | 0.38 | 0.70 | 0.33 |
(0.47–0.83) | (0.34–0.50) | (0.58–0.90) | (0.31–0.46) | (0.52–0.81) | (0.32–0.44) | (0.55–0.83) | (0.27–0.39) | |
Reader 4 | 0.53 | 0.37 | 0.53 | 0.35 | 0.61 | 0.37 | 0.61 | 0.33 |
(0.34–0.72) | (0.30–0.45) | (0.34–0.72) | (0.28–0.43) | (0.45–0.76) | (0.32–0.44) | (0.45–0.76) | (0.27–0.39) | |