IRCT20201005048925N1 IRCT 2020-10-12 National Institue for Medical Research Development (NIMAD) Effectiveness of an educational intervention on fertility knowledge, childbearing intention and planned pregnancy among new couples Effectiveness of an educational intervention on fertility knowledge, childbearing intention and planned pregnancy among new couples referring to premarital counselling centers: a randomized clinical trial 2020-11-21 anticipated 1240 Complete https://irct.ir/trial/51413 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Not used, Assignment: Parallel, Purpose: Education/Guidance, Randomization description: Samples will be selected through stratified sampling and random samples are then selected from each stratum. The strata consist of 5 cities and separate randomization lists will be prepared for each city using a block randomization. Then we will use central randomization that is stratified to the cities. The couples will randomly be assigned into 2 groups in each city by a computer-generated random sequence. For randomization, the permuted block randomization will be used (block size=4). According to the sample size of 440 identified, 110 blocks will be produced using the online site (www.sealedenvelope. com) for Tehran. According to the sample size of 200 identified, 50 blocks will be produced using the online site (www.sealedenvelope. com) for other cities. Allocation will be concealed by using sequentially numbered opaque sealed envelopes that contain group assignments determined by computer-generated random sequences, Blinding description: Given the nature of the intervention, it is not possible to blind participants to researchers involved in providing the intervention and data collection. However, allocation to intervention or control groups will be blinded for researchers in the data set available during data analysis. To avoid the potential contamination between two groups, we will provide the educational intervention after the typical premarital counselling. N/A Condition 1: Fertility knowledge. Condition 2: Childbearing intention. Condition 3: Planned pregnancy. Intervention 1: Intervention group: The intervention group will receive both the typical premarital counselling training and a fertility knowledge package containing virtual (off-line) educational package at two time episodes with an interval of one month. The intervention includes text messages and short films. The content of educational or counselling program will be based on the most updated literature on fertility knowledge. The fertility knowledge package will consist of information on fertility rates, infertility rates, risks of delay in childbearing, safe waiting period for parenting, Impact of age on female fertility, limited fertility period for women, fertility window and how to optimize fertility, impact of weight and lifestyle on fertility, definition of infertility, infertility risk factors, impact of STD on fertility, the need for earlier evaluation and treatment of infertility, success rate and financial costs of infertility treatments, assisted conception and fertility preservation. Intervention 2: Control group: The control group will receive only typical premarital counselling in public health centers. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is There is no more data.