Table 1.

Details on the 92 participating radiologists, with interquartile rangers.

Parameter	Median	First quartile	Third quartile	Min	Max
Age (y)	52.5	44.5	56.75	31	75
Years since qualification	13.5	8.5	20	1	42
Years reading mammograms	10	4.25	16	1	28
Mammograms read per year	2500	1213	5000	250	15,000
Hours reading mammograms per week	10	5	19.5	1	40
Mammograms read over lifetime*	24,000	8100	49,500	500	300,000

* The number of years reading mammograms multiplied by the number of mammograms read per year