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Table 1 Research measures

From: A randomized controlled trial to prevent childhood obesity through early childhood feeding and parenting guidance: rationale and design of study

Ecological level Purpose of measure Variable Measure Instruments When/Howcollected
Child Study Outcome Anthropometrics Length, weight W/L or BMI graph Scale/stadiometer 1 week, 1, 6, 12, 18, 24, 36 months Physical measure
  Study covariate, intervention component Sleep Hours of infant sleep BISQ 1, 6, 12, 18, 24, 36 months Questionnaire
  Study covariate, intervention component Screen time Home Observation Measurement Environment HOME tool 1 week, 1, 6, 12, 18, 24, 36 months Observation
  Study outcome, intervention component Age of food introduction Week when solid food introduced 24-hr diet recall, analyzed with NDSR; Questionnaire 1, 6, 12, 18, 24, 36 months Interview
Food Study outcome, intervention component Daily food intake Fruit, vegetables, sweet drinks, desserts, candy   questions about breast/bottle feeding will cease when child weaned.
  Study outcome, intervention component Breast/Bottle Feeding Amt. formula/times Breastfed per day Telephone Questionnaire Monthly for 12 months after birth or until breastfeeding ceases
Parent/Home Study outcome, intervention component Parent–child interaction Feeding scale Teaching scale FITS 1 week, 1, 6, 12, 18, 24, 36 months Observation
  Study covariate, intervention component Maternal size Pre-pregnant BMI Scale/stadiometer From Prenatal WIC record Existing data
  Study covariate Age, education, etc. Demographics Questionnaire Prenatal record Existing data
  Study covariate Acculturation Brief ARSMA Questionnaire Prenatal Questionnaire