Table 2.

Kaplan-Meier product limit estimates of probabilities of success

Age group, years	Probability of success (95% CI)
	With fascial interposition	Without fascial interposition
	Azoospermia, 14 weeks
Overall	71% (67, 76)	61% (56, 66)
<30	91% (85, 97)	62% (51, 72)
30 to 34	71% (63, 80)	64% (56, 73)
35 to 39	69% (59, 79)	64% (54, 73)
40+	48% (37, 59)	53% (44, 63)
	Azoospermia, 34 weeks
Overall	86% (82, 91)	83% (78, 87)
<30	95% (90, 99)	80% (71, 90)
30 to 34	85% (77, 93)	81% (74, 86)
35 to 39	89% (81, 97)	88% (81, 95)
40+	75% (59, 91)	81% (72, 90)
	Severe Oligozoospermia, 14 weeks
Overall	91% (88, 94)	82% (78, 86)
<30	94% (89, 99)	77% (68, 87)
30 to 34	89% (83, 95)	82% (75, 89)
35 to 39	91% (85, 97)	84% (76, 91)
40+	91% (85, 97)	83% (76, 90)
	Severe Oligozoospermia, 34 weeks
Overall	94% (92, 97)	87% (84, 91)
<30	95% (90, 99)	86% (80, 96)
30 to 34	92% (87, 97)	87% (81, 93)
35 to 39	96% (91, 100)	89% (82, 96)
40+	95% (89, 100)	86% (79, 93)

CI: Confidence interval