Should you try the new way of assessing children's weight?

BMI just as good as new measure for predicting long-term outcomes

Stick with BMI when assessing children’s risk of future obesity-related health problems, with research suggesting a new measure — the triponderal mass index (TMI) — is no better at predicting long-term outcomes, according to Australian and Finnish research.

BMI is superior to TMI (weight divided by height cubed) and subscapular skin-fold thickness (SST) when it comes to predicting obesity, type 2 diabetes and hypertension in adulthood, even after adjusting for age, data from more than 3500 people shows.

BMI is also superior to both other measures for predicting hypertension and LDL cholesterol, the researchers wrote in a letter published in the Journal of the American Medical Association.

The research was driven by current debate over the appropriateness of BMI during periods of rapid growth in childhood and adolescence and a previous finding that TMI was superior for measuring youth body-fat