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 quartileSecond quartileThird quartileFourth quartile
Predicted probability of incident PSA test, % (95% CI)
Anxiety caused by uncertainty2.5 (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 outcomes2.4 (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 ambiguity3.1 (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 ambiguity1.4 (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 attitude1.3 (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)