Table 4.

Predicted probabilities that a male patient aged ≥20 years will have an incident or a repeated normal PSA test when exposed to a GP scoring in the first, second, third, or fourth quartiles of significant predictor variables

	First quartile	Second quartile	Third quartile	Fourth quartile
Predicted probability of incident PSA test, % (95% CI)
Anxiety caused by uncertainty	2.5 (2.0 to 3.0)	2.5 (2.0 to 2.9)	3.0 (2.2 to 3.8)	3.6 (2.8 to 4.4)
Concern about bad outcomes	2.4 (2.0 to 2.9)	3.0 (2.1 to 3.8)	3.1 (2.5 to 3.8)	3.2 (2.4 to 3.9)
Tolerance for ambiguity	3.1 (2.4 to 3.8)	3.7 (2.8 to 4.6)	2.4 (2.0 to 2.8)	2.1 (1.6 to 2.6)
Predicted probability of repeated normal PSA test, % (95% CI)
Tolerance for ambiguity	1.4 (0.9 to 1.9)	1.2 (0.7 to 1.6)	1.0 (0.7 to 1.2)	0.7 (0.5 to 1.0)
Physician risk attitude	1.3 (0.9 to 1.7)	1.2 (0.9 to 1.5)	0.8 (0.5 to 1.1)	0.8 (0.5 to 1.2)