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Table 3 Associations among experience-related variables in the 21 radiologists routinely interpreting mammograms and sensitivity, specificity and overall accuracy (multivariate analysis).

From: Association between Radiologists' Experience and Accuracy in Interpreting Screening Mammograms

  Sensitivity Specificity Accuracy†
  Adj. OR 95% CI P Adj. OR 95% CI P Adj. OR 95% CI P
Annual volume of mammogram Reading          
   More than 5,000 mammograms 0.93 (0.56 to 1.54) 0.780 1.15 (0.98 to 1.35) 0.090 1.06 (0.90 to 1.25) 0.450
   Less than 5,000 mammograms 1.00 (reference)   1.00 (reference)   1.00 (reference)  
Feedback          
   Yes 0.98 (0.43 to 2.27) 0.957 1.37 (1.03 to 1.85) 0.029 1.19 (0.89 to 1.56) 0.243
   No 1.00 (reference)   1.00 (reference)   1.00 (reference)  
Percentage of time spent on breast radiology          
   Less than 25% 0.70 (0.36 to 1.37) 0.295 1.49 (1.18 to 1.89) 0.001 1.10 (0.87 to 1.38) 0.438
   More than 25% 1.00 (reference)   1.00 (reference)   1.00 (reference)  
Years of practice reading mammograms          
   Less than 10 years 1.40 (0.84 to 2.34) 0.193 1.04 (0.89 to 1.21) 0.640 1.14 (0.97 to 1.34) 0.102
   More than 10 years 1.00 (reference)   1.00 (reference)   1.00 (reference)  
Do the radiologist usually consult with other radiologists when reading?          
   Yes 0.61 (0.29 to 1.30) 0.202 1.04 (0.84 to 1.28) 0.717 0.89 (0.71 to 1.11) 0.300
   No 1.00 (reference)   1.00 (reference)   1.00 (reference)  
Radiologist' age          
   More than 45 0.56 (0.31 to 1.01) 0.053 1.33 (1.12 to 1.59) 0.001 1.00 (0.83 to 1.19) 0.971
   Less than 45 1.00 (reference)   1.00 (reference)   1.00 (reference)  
  1. Adj. OR: Adjusted odds-ratio; 95% CI: 95% confidence interval; P: Chi-square probability
  2. † Correct diagnosis of both cancer and absence of cancer on recalling women for additional investigations.