{'fraction_non_alphanumeric': 0.03639846743295019, 'fraction_numerical': 0.008620689655172414, 'mean_word_length': 5.075581395348837, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Comparison of pregnancy and implantation rates in fresh embryo transfer (ET) and frozen-thawed ET cycles in infertile women with polycystic ovarian syndrome.

Objective: Aim of this study is to evaluate the pregnancy and implantation rates in fresh-embryo transfer (ET) and frozen-thawed ET cycles in women with polycystic ovarian syndrome (PCOS). Methods: PCOS was diagnosed by the Rotterdam criteria. In 4 cases of 72 stimulation cycles, ET was not conducted due to severe ovarian hyperstimulation syndrome (OHSS). Sixty eight cycles of fresh-ET and 40 cycles of frozen-thawed ET were included in this retrospective study. Age, gravidity, body mass index, infertility duration were compared between two groups. Number of embryos transferred, implantation rate, clinical pregnancy rate and multiple pregnancy rate were compared between two groups by using chi-square test and student's t-test. Results: Number of embryos transferred showed significant difference between two groups. Fresh-ET group was 4.7 and frozen-thawed ET group was 2.8 (P