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Table 1 Schedule of procedures, assessments, and interventions

From: Optimizing early child development for young children with non-anemic iron deficiency in the primary care practice setting (OptEC): study protocol for a randomized controlled trial

   Study period
  Pre-randomization Intervention Post-intervention follow-up Post-intervention follow-up
Time point 1 weeks 0 4 months 4 months 12 months
Subjects Screening Cohort N = 1500 RCT subjects n = 150 RCT subjects n = 150   
Intervention   X X   
Control   X X   
PROCEDURES: Informed consent X     
Eligibility screen X     
Randomization   X    
TARGet Kids! Child and Family Questionnaire X     
Laboratory measurements: Hemoglobin, serum ferritin, mean corpuscular volume (MCV), C-reactive protein (CRP) X    X X
IBQ (12-17 months infants)/ECBQ (18-36 months children)/CBQ (37-72 months children)* X    X X
Physical measurements: height and weight, waist circumference X    X X
Mullen Scales of Early Learning (MSEL)   X   X X
4 month follow-up questionnaire     X  
  1. *IBQ: Infant Behavior Questionnaire; ECBQ: Early Childhood Behavior Questionnaire; CBQ: Children’s Behavior Questionnaire.