KERALA has once again topped in the latest health ranking NITI Aayog report, "Healthy States, Progressive India". The report ranks states and union territories on their year-on-year incremental change as well as overall performance with respect to 23 health indicators such as neonatal mortality rate, ‘under five’ mortality rate, percentage of low birth weight infants, sex ratio at birth etc., NITI Aayog had first come out with its state-wise health rankings in February 2018 over financial year 2014-15 (base year) to 2015-16 (reference year).