Methods	Design: RCT
	Unit of randomisation: Cluster (school) randomised trial
Participants	Location/Setting: Municipal primary schools in Vadodara, India
	Sample size: 358 girls
	Dropouts/withdrawals: 104 out of 358 loss to follow‐up
	Sex: Only girls
	Mean age: Not specified
	Inclusion criteria: 9–13 year old girls studying in grades V and VI were enrolled in the study
	Exclusion criteria: Not specified
Interventions	Intervention (sample size):
	Group 1 (N = 94): The participants were given IFA tablets (100 mg elemental iron + 0.5 mg folic acid) once weekly
	Group 2 (N = 118): The participants were given IFA tablets (100 mg elemental iron + 0.5 mg folic acid) twice weekly
	Group 3 (N = 81): The participants were given IFA tablets (100 mg elemental iron + 0.5 mg folic acid) daily
	The intervention was continued for a duration of 1 year
	Control (sample size):
	Group 4 (N = 65): Control group did not receive any intervention
Outcomes	Primary outcomes: Hemoglobin levels, BMI, cognitive test scores
	Secondary outcomes: Not specified
	Timing of outcome assessment: After one year of intervention
Notes	Study start date: Not specified
	Study end date: Not specified
	Funding source: None
	Conflicts of interest: None stated