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Table 1 Study endpoint definitions

From: Infant feeding knowledge and practice vary by maternal HIV status: a nested cohort study in rural South Africa

Outcome type Definition
Knowledge of infant feeding recommendations (early postnatal interviews)
This was a total score out of 3, each question coded as correct or incorrect, with a higher score indicating better knowledge:
• defining exclusive breastfeeding correctly
• identifying exclusive breastfeeding as the recommended feeding method for all infants
• identifying exclusive breastfeeding as the recommended feeding method for HIV-exposed infants
Infant feeding practices (6-week postnatal interviews)
This was classified in three unordered categories:
(i) Exclusive breastfeeding defined as:
• currently breastfeeding; and
• never administered other food or fluids to the infant
(ii) Mixed feeding defined as:
• currently breastfeeding; and
• ever administered other food or fluids to the infant
(iii) Not currently breastfeeding:
• this included women who may have initiated breastfeeding and ceased prior to the 6-week interview as well as those who had exclusively replacement fed their infant since delivery
Knowledge of HIV treatment and transmission (6-week postnatal interviews)
This was a total score out of 8 questions, each coded as correct or incorrect, with a higher score indicating better knowledge:
• HIV viral load knowledge (meaning of a suppressed viral load)
• role of a suppressed viral load in sexual transmission
• role of a suppressed viral load in MTCT through breastmilk
• when to test for HIV
• the role of ART in improving health (2 questions)
• that ART is lifelong
• the role of CD4 count measurement
  1. ART antiretroviral therapy, MTCT mother-to-child transmission of HIV