groups Grade 1-2 Grade 3-4
Group I (n=116)  Testicular Elongated  37.1% 62.9%
Group II (n=65) TESE-Immotile 41.5% 58.5%
Group III (n=115) TESE-Motile 47.0% 53.0%
Group IV (n=50) Severe Oligozoospermia 64.0% 36.0%
Group V (n=56) Total Immotile 71.4% 28.6%
Group VI (n=96) Low Fertilization Rate 39.6% 60.4%
Table 2: Quality of Embryos in Each Study Group Following Piezoelectric Stimulation