Table 3.

Effects of surgeon experience on outcome, separately by preoperative risk group: analysis restricted to patients treated after 1995 (n=5038). Probabilities are for a patient with typical cancer severity within each group (mean PSA, stage and grade) treated at the midpoint of the series. 95% confidence intervals for the absolute and relative differences are given in parentheses.

Analysis	Adjusted P value for surgeon experience	Adjusted 5-year probability of recurrence		10 vs 250 prior cases
		10 prior cases	250 prior cases	Absolute difference	Relative difference
Low risk	0.008	10.3%	2.2%	8.1% (2.7%, 12.8%)	4.7 (2.2, 11.8)
Intermediate risk	<0.001	27.1%	10.4%	16.7% (7.6%, 25.1%)	2.6 (1.7, 4.3)
High risk	0.001	46.3%	19.5%	26.8% (11.6%, 43.4%)	2.4 (1.5, 3.8)