Association between Radiologists' Experience and Accuracy in Interpreting Screening Mammograms

Table 2 Association among experience-related variables in the 21 radiologists routinely interpreting mammograms (univariate analysis)

	P Sens.	Sensitivity	P Spec.	Specificity	Mean AUC	Mean AUC90
Annual volume of mammogram Reading	0.193		0.170
More than 5,000 mammograms		0.85		0.67	91.66	72.13
Less than 5,000 mammograms		0.83		0.65	83.56	44.45
Feedback	0.239		0.213
Yes		0.85		0.66	85.71	50.76
No		0.81		0.64	80.66	34.98
Percentage of time spent on breast radiology	0.019		<.0001
Less than 25%		0.78		0.70	82.36	36.96
More than 25%		0.86		0.65	85.27	49.72
Years of practice reading mammograms	0.116		0.166
Less than 10 years		0.88		0.65	85.60	47.45
More than 10 years		0.82		0.67	84.49	48.83
Do the radiologist usually consult with other radiologists when reading?	0.036		<.0001
Yes		0.83		0.67	84.47	48.11
No		0.90		0.62	87.18	50.18
Radiologist' age	0.007		<.0001
More than 45		0.81		0.68	84.06	48.87
Less than 45		0.90		0.58	87.96	47.34

P Sens., P. Spec. = Chi-square of the score test for Type 3 GEE analysis. Mean AUC = Mean area under the empirical receiver operating characteristic curve. Mean AUC90 = Mean area under the ROC curve con una specificity fixed at 90% of the empirical receiver operating characteristic curve.

ISSN: 1472-6963