“…Food frequency questionnaires (FFQs, n = 8 articles) 33–38,41,45 and 24‐h dietary recalls ( n = 6 articles) 29,31,32,40,43,44 were the most commonly used methods (Tables 3 and S3). In most cases, mothers who were aware of their group assignment reported infant dietary intake 29–41,43–45 . In terms of analysis, some studies analysed intake as a continuous variable, for example, grams per day, 29,33,40–42,44,45 while some considered it as a dichotomous variable, for example, whether the child ever consumed a particular food or drink 30–32,34–40,43,44 .…”