Table 2.

Comparison of previously published studies of the frequency of Y-microdeletions in infertile males. The cumulative totals do not include the data of this study (bottom row)

Study	Number of participants	Y-microdeletions detected (AZFa, AZFb, AZFc, combined)	% of Y-microdeletion positive patients
Ferlin et al. [21]	3073	99	3.2%
Kumtepe et al. [7]	1935	105	5.4%
Maurer et al. [22]	1470	19	1.3%
Abid et al. [23]	300	6	2.0%
Ng et al. [12]	295	19	6.4%
Mohammed et al. [13]	289	7	2.4%
Peterlin et al. [24]	226	10	4.4%
Cummulative totals from previously published studies	7588	265	3.5%
Current study	2749	100	3.6%