Recent secondary datasets that include anthropometric measurements of children can provide key pointers to the multi-causality of undernutrition in a set context. When re-assessed per Link NCA Guidelines, correlations between indicators in key sectors and child nutrition outcomes can guide hypotheses development, substitute for a Risk Factor Survey, or buttress the findings of a Risk Factor Survey. The Analyst must take into consideration the relevance of the secondary dataset to the zone of the study and time required for analyses. Based on experiences in Myanmar, Uganda, and Somalia, it is recommended that all Link NCA Analysts review availability of secondary datasets during the preparatory stage of the study.