Base-Rate Error in the Interpretation of Immunohistochemistry

Table 1

Summary of results.

	Consultant pathologists	Trainee pathologists	Other doctors	Medical students
Number responding to survey	82	38	23	N/A
Number answering question	43	28	16	59
Median predicted probability of tumour B (%)	10	10	10	10
Mean predicted probability of tumour B (%)	29.7	28	28.8	32.3
Range (%)	0–100	0.008–99	1–90	0.08–90.1
Standard deviation	37.1	35.6	28	34.9