Knowledge of infant feeding recommendations (early postnatal interviews)
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This was a total score out of 3, each question coded as correct or incorrect, with a higher score indicating better knowledge:
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• defining exclusive breastfeeding correctly
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• identifying exclusive breastfeeding as the recommended feeding method for all infants
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• identifying exclusive breastfeeding as the recommended feeding method for HIV-exposed infants
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Infant feeding practices (6-week postnatal interviews)
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This was classified in three unordered categories:
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(i) Exclusive breastfeeding defined as:
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• currently breastfeeding; and
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• never administered other food or fluids to the infant
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(ii) Mixed feeding defined as:
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• currently breastfeeding; and
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• ever administered other food or fluids to the infant
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(iii) Not currently breastfeeding:
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• 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
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Knowledge of HIV treatment and transmission (6-week postnatal interviews)
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This was a total score out of 8 questions, each coded as correct or incorrect, with a higher score indicating better knowledge:
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• HIV viral load knowledge (meaning of a suppressed viral load)
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• role of a suppressed viral load in sexual transmission
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• role of a suppressed viral load in MTCT through breastmilk
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• when to test for HIV
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• the role of ART in improving health (2 questions)
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• that ART is lifelong
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• the role of CD4 count measurement
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