Table 3– Results of pooled analysis and heterogeneity
Studies nPatients nPooled sensitivity(95% CI)Pooled specificity(95% CI)AUC (se)Likelihood ratio I2 %Chi-squared test (p-value)
All studies131,0900.73 (0.70–0.76)1.00 (0.99–1.00)0.9376 (0.046)7530.13 (p<0.0001)
 Outliers removed119070.76 (0.73–0.80)1.00 (0.99–1.00)0.9199 (0.062)5522.4 (p = 0.013)
Use fluoroscopy
 Yes55260.73 (0.68–0.78)0.9378 (0.081)609.98 (p = 0.041)
 No85640.73 (0.68–0.77)0.9409 (0.075)8237.9 (p<0.0001)
Use guide sheath
 Yes108410.73 (0.69–0.76)0.9407 (0.051)7840.6 (p<0.0001)
 No32490.69 (0.63–0.75)0.9126 (0.114)679.16 (p = 0.027)
Without VB111,0290.72 (0.69–0.75)0.9483 (0.050)7845.4 (p<0.0001)
Median size
 <25 mm75800.71 (0.66–0.75)0.9356 (0.071)7322.2 (p = 0.001)
 ≥25 mm65100.75 (0.70–0.79)0.9364 (0.066)8024.3 (p<0.0001)
 <25 mm outliers removed54800.75 (0.70–0.80)0.8940 (0.124)275.5 (p = 0.240)
Prevalence#
 <75%96880.70 (0.66–0.74)0.9127 (0.103)8523.05 (p = 0.003)
 >75%44020.83 (0.78–0.88)0.9338 (0.117)374.73 (p = 0.193)
 <75 % outliers removed85880.73 (0.69–0.77)0.8578 (0.169)208.79 (p = 0.268)
Reference standard
 Histology only74520.79 (0.75–0.84)0.9176 (0.103)339.0 (p = 0.174)
 Alternate means/not stated66380.71 (0.68–0.76)0.9023 (0.118)5616.1 (p = 0.025)
  • AUC: area under the curve; VB: virtual bronchoscopy. #: prevalence of malignancy in lesions investigated using endobroncial ultrasound-transbronchial lung biopsies.