To determine the association of factors affecting the clinical pregnancy and live birth rates in patients undergoing in vitro fertilization (IVF) who received intracytoplasmic sperm injection (ICSI) and/or laser assisted hatching (LAH) or neither.

After applying the inclusion and exclusion criteria, a total of 400 women who underwent IVF between January 2007 and December 2010 were included in the analysis. Patients were divided into 4 groups; 1) those that did not receive ICSI or LAH, 2) those that received ICSI only, 3) those that received LAH only, and 4) those that received both ICSI and LAH. Univariate and multivariate analyses were performed.

Inclusion Criteria:

• The present study was a retrospective review of the outcomes of women who underwent IVF with or without intracytoplasmic sperm injection (ICSI) at the Far Eastern Memorial Hospital, Taipei, Taiwan, between January 2007 and December 2010.

Exclusion Criteria:

• Cases in which estradiol levels exceeded 50 pg/mL on the second day of the menstrual cycle were excluded.
• Female minors or disabled persons.

the patients with different causes of infertility