Table 5.

The commonly used incorrect Bayesian approaches*

	Training session			Follow-up examination
	total	Frequency tree	2 × 2 table	total	Frequency tree	2 × 2 table
correct positive rate/ false positive rate	41	26 (63)	15 (37)	16	11 (69)	5 (31)
disease yes / all positives	14	7 (50)	7 (50)	37	20 (54)	17 (46)
correct positives / disease yes	11	6 (55)	5 (45)	22	11 (50)	11 (50)
all positives / total	4	4 (100)	0 (0)	14	6 (43)	8 (57)
all positives / 100	0	0 (0)	0 (0)	6	6 (100)	0 (0)
disease yes / correct positives	4	1 (25)	3 (75)	1	1 (100)	0 (0)
all positives/ correct positives	4	0 (0)	4 (100)	5	5 (100)	0 (0)
not identified	23	13 (57)	10 (43)	29	14 (48)	15 (52)
total	101	57 (56)	44 (44)	130	74 (57)	56 (43)

* Values are numbers (percentages) of incorrect Bayesian approaches.