Smoking 2.sav

Through a case-control study, 160 infertile couples were recruited from in-vitro fertilization centres in Gaza Strip. Correspondingly, another 160 fertile couples were selected from governmental clinics and residentially matched with cases. Probable stratified random technique for 2017/2018 patient’s registries was performed. Both cases and controls were interviewed with a self-constructed questionnaire. Descriptive analysis, logistic regression and Cochran-Mantel-Haenszel test were deployed statistically with a significant level set on <i>P</i>=0.05.