    |Sentence 1: By comparison , the proportion of people  ith a BMI of 50 or above increased by a factor of  live — from about 1 in 2,000 to one in 400.    |Sentence 2: Those with a BMI of 50 or greater ,  sometimes called super obesity , increased by a  factor of five , from one in 2,000 to one in 400.    