Effect of radiologist experience on the risk of false-positive results in breast cancer screening programs.

Objectives: To evaluate the effect of radiologist experience on the risk of false-positive results in population-based breast cancer screening programmes.

Methods: We evaluated 1,440,384 single-read screening mammograms, corresponding to 471,112 women aged 45-69 years participating in four Spanish programmes between 1990 and 2006. The mammograms were interpreted by 72 radiologists.