Background & Aim: Regarding the increase of sexual transmitted disease, high risk behaviour and unwanted pregnancy in one hand, and myth, incorrect believes and low knowledge about sexuality in the other hand, sexual health education is one the basic compartment of health promotion. The pre-marriage counseling is one of the best opportunities to reach our aim.

Methods & Materials: This was a semi-practical study. We had considered 32 case couples and 32 control couples randomly. The couples had been chosen from those, which have been contacted to the clinics of Tehran University of medical sciences. All cases had contributed to three lectures given by the researcher. The lectures were mainly based on the different aspects of sexual health, like: family plain, safe sex, different aspects of sexuality & physiologic different in men's and women’s. On the other hand the control group had taken the normal lectures, which presents in the clinics which were based on the family planning and pre-marriage experiments. Both groups (cases and controls) had been asked to fill a form six months after counseling. In this form, we had included 10 questions of sexual health and 10 demographic questions. We had finally analyzed our data by SPSS software where we had used descriptive and discriminated statistics.

Results: We have obtained a considerable difference in sexual health between the two groups by Man-Whitney test (p=0.000). The majority of case group (96.9%) showed a good sexual health whereas the most procent of control group (59.4%) had a moderate sexual health.

Conclusion: To improve the quality of pre-marriage counseling, the content of usual lectures should be modified in addition to consider more time for these lectures. The results revealed that the pre-marriage counseling enhances the sexual health that lead to marital satisfaction.

Background & Aim: Fertility is the most important factors affecting population fluctuations. Reproductive behaviors of a community can be studied through different methods. One of the methods is the evaluation of the interval between marriage and the birth of the first child. The aim of this study was to investigate the factors influencing the interval between marriage and first birth using the Cox regression model.

Methods & Materials: In this study, 1230 first-time mothers referred to urban and rural health centers of the city of Bandar Abbas were selected and studied in 2012-2013. The Cox regression model (proportional hazard) was performed to investigate the interval between marriage and first birth and the factors influencing this interval. Descriptive analysis of data was performed using SPSS software version 22 and data modeling was performed by R software version 3.2.1.

Results: In this study, the mean interval between marriage and first birth was 27.63 (±24.35) months. Based on the Cox model, mother’s age at marriage with HR(Hazard-Ratio)=1.13 (1.01–1.25) and place of residence with HR=1.28 (1.12–1.46) had significant effects on the interval between marriage and first birth.

Conclusion: The results of the current study compared to previous studies show that the interval between marriage and first birth has decreased, and some changes are observed in the factors influencing this interval.