Construct validity of the Planetary Health Diet Index relative to global food group-based measures of a healthy diet: A multi-country analysis of 24-hour dietary intake data on the FAO/WHO Global Individual Food Consumption Data Tool.
BACKGROUND The Planetary Health Diet Index (PHDI) was developed as a measure of adherence to the Planetary Health Diet proposed by the EAT-Lancet Commissions, however, its construct validity for accurately reflecting a healthy diet as compared to other global dietary measures remains to be evaluated. OBJECTIVE The co...