A multicenter randomized controlled trial protocol to evaluate the effectiveness of an educational intervention on fertility knowledge, intention and behavior among Iranian new couples

Table 1 Flow diagram of the study design

	STUDY PERIOD
	Pre-intervention		Post- intervention
TIMEPOINT	Enrolment	Allocation	3th month	12th month	18th month
Enrolment
Eligibility screening	×
Informed consent	×
Randomization		×
Interventions
Intervention (fertility knowledge training)			×	×	×
Control (typical premarital counselling)			×	×	×
Assessments
Primary outcomes
fertility knowledge		×	×	×	×
childbearing intention		×	×	×	×
first planned pregnancy		×	×	×	×
Secondary outcomes
contraception method use		×	×	×	×
miscarriage		×	×	×	×
unplanned pregnancy		×	×	×	×

ISSN: 1471-2458