Quality assurance
MALNOURISHED, BLIND
An independent person by blind allocation carried out the randomization of villages to the intervention and the control group. This is done to avert the bias in allocation concealment. All Anganwadi centres belonging to allocated villages were included to avoid sample contamination, and all malnourished preschool children who met the inclusion criteria from those Anganwadi centers were included in the study. The researcher approached the Anganwadi center as per the concealment allocation of the villages to the intervention group and the control group. A single researcher carried out the pretest measurements and intervention. An outcome assessor, who is a trained person and was blinded about the study group, performed the follow-up and post-test measurements for both the intervention and control groups. The anthropometric measurement was carried out as per WHO recommendations; which included training in measurement techniques, periodic calibration of the equipment, and supervisors (team members) reviewed activities periodically.