Table 2

Meta-regression for FENO devices

FENO device (measurement technique)nSensitivity (95% CI)Specificity (95% CI)
Niox Flex (chemoluminescence)120.58 (0.27 to 0.83)0.88 (0.59 to 0.97)
Other chemoluminescence80.84 (0.76 to 0.90)0.77 (0.65 to 0.86)
Niox Mino (electrochemical)50.59 (0.31 to 0.82)0.81 (0.51 to 0.94)
Other electrochemical10.16 (0.02 to 0.63)0.98 (0.48 to 1.00)
  • n, number of data sets in analysis (two studies/three data sets without sufficient information).