fa Midwifery Original Article <p style="text-align: justify;"><span style="font-family:Times New Roman;"><span style="font-size:11pt"><span style="line-height:107%"><span sans-serif=""><b>Background:</b> Sexual function is particularly important aspect of pregnant women&rsquo;s lives that can affect mental health and family cohesion. The present study aimed to determine the effect of sex education on sexual function of primigravid pregnant women.</span></span></span><br> <span style="font-size:11pt"><span style="line-height:107%"><span sans-serif=""><b>Methods:</b> This randomized clinical trial study with four parallel groups (two intervention and two control groups) was conducted on 100 primigravid women in 2019. The Two intervention groups (n=50) received three sessions of sex education, once a week and two control groups (n=50) didn&#39;t received sex education. The Female Sexual Function Index was completed at the beginning of the study and after eight weeks. Data were analyzed with SPSS (version 18) and One-way analysis of variance (ANOVA), paired t-test, Fisher&#39;s exact test were used for analysis and significance was set at 0.05.</span></span></span><br> <span style="font-size:11pt"><span style="line-height:107%"><span sans-serif=""><b>Results:</b> The Given that the mean sexual function in the groups before the intervention was significantly different (P=0.0004), the Mean difference rate of change (Mean DRC) was used for inter-group comparisons.&nbsp; Mean DRC of sexual function in the first intervention group (sex education and prenatal education) was 0.173<span arial="" dir="RTL" lang="FA">&plusmn;</span>0.563 (17% increase) and the second intervention group (only sex education), was 0.106<span arial="" dir="RTL" lang="FA">&plusmn;</span>0.209 (10% increase). However, Mean DRC of sexual function decreased significantly in the two control groups (-0.0364<span arial="" dir="RTL" lang="FA">&plusmn;</span>0.205) (-0.009<span arial="" dir="RTL" lang="FA">&plusmn;</span>0.132) (P<0.05).</span></span></span><br> <span style="font-size:11pt"><span style="line-height:107%"><span sans-serif=""><b>Conclusion</b>: The results confirm the positive effects of sex education on sexual function during pregnancy. In addition, combination of sex education with conventional prenatal education can have a greater impact on the overall sexual function than each intervention separately.</span></span></span></span></p> Sexual behavior, Pregnancy, Education, Sexual Dysfunctions, Sexual health 1 5 http://nmj.goums.ac.ir/browse.php?a_code=A-10-938-5&slc_lang=fa&sid=1 Narjes Sadat Borghei borghei2006@yahoo.com 100319475328460010414 100319475328460010414 No Department of Midwifery, Counseling and Reproductive Health Research Center, Golestan University of Medical Sciences, Gorgan, Iran Fatemeh Seifi f_seifi2016@yahoo.com 100319475328460010415 100319475328460010415 Yes Department of Midwifery, School of Nursing and Midwifery, Golestan University of Medical Sciences, Gorgan, Iran Naser Behnampour behnampour@yahoo.com 100319475328460010416 100319475328460010416 No School of Nursing and Midwifery, Golestan University of Medical Sciences, Gorgan, Iran Fatemeh Raeesian reisian2008@gmail.com 100319475328460010417 100319475328460010417 No Department of Midwifery, Faculty member of Azad University, Gorgan, Iran