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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)
  1. a33 HIV–positive and 35 HIV–negative participants excluded due to missing or contaminated cultures