Study protocol of a 4- parallel arm, superiority, community based cluster randomized controlled trial comparing paper and e-platform based interventions to improve accuracy of recall of last menstrual period (LMP) dates in rural Bangladesh

Table 2 Sample distribution

Number of samples
	Arm1: Control arm	Arm2: Counselling & calendar (C + C)	Arm3: Counselling & SMS (C + S)	Arm4: Counselling & smart phone application	Total
Recently married women	420	420	420	420	1680
Adolescent girls	420	420	420	420	1680

ISSN: 1471-2458