[stnmtn]

̶R̶e̶a̶d̶i̶n̶g̶ ̶t̶h̶i̶s̶ ̶s̶t̶u̶d̶y̶,̶ ̶I̶ ̶b̶e̶l̶i̶e̶v̶e̶ ̶y̶o̶u̶ ̶a̶r̶e̶ ̶m̶i̶s̶i̶n̶t̶e̶r̶p̶r̶e̶t̶i̶n̶g̶ ̶t̶h̶e̶ ̶r̶e̶s̶u̶l̶t̶s̶.̶ ̶I̶t̶ ̶s̶a̶y̶s̶ ̶n̶o̶t̶h̶i̶n̶g̶ ̶a̶b̶o̶u̶t̶ ̶i̶f̶ ̶b̶e̶i̶n̶g̶ ̶o̶v̶e̶r̶w̶e̶i̶g̶h̶t̶ ̶d̶e̶c̶r̶e̶a̶s̶e̶s̶ ̶a̶l̶l̶-̶c̶a̶u̶s̶e̶ ̶m̶o̶r̶t̶a̶l̶i̶t̶y̶ ̶r̶e̶l̶a̶t̶i̶v̶e̶ ̶t̶o̶ ̶n̶o̶r̶m̶a̶l̶ ̶w̶e̶i̶g̶h̶t̶.̶ ̶I̶t̶ ̶o̶n̶l̶y̶ ̶s̶a̶y̶s̶ ̶b̶e̶i̶n̶g̶ ̶o̶v̶e̶r̶w̶e̶i̶g̶h̶t̶ ̶d̶e̶c̶r̶e̶a̶s̶e̶s̶ ̶a̶l̶l̶-̶c̶a̶u̶s̶e̶ ̶m̶o̶r̶t̶a̶l̶i̶t̶y̶ ̶r̶e̶l̶a̶t̶i̶v̶e̶ ̶t̶o̶ ̶o̶b̶e̶s̶i̶t̶y̶.̶ ̶ ̶T̶h̶a̶t̶ ̶i̶s̶ ̶h̶o̶w̶ ̶I̶ ̶r̶e̶a̶d̶ ̶i̶t̶ ̶a̶t̶ ̶l̶e̶a̶s̶t̶,̶ ̶I̶ ̶c̶a̶n̶'̶t̶ ̶f̶i̶n̶d̶ ̶a̶ ̶b̶a̶s̶e̶l̶i̶n̶e̶ ̶f̶o̶r̶ ̶t̶h̶e̶ ̶H̶R̶ ̶o̶f̶ ̶a̶ ̶n̶o̶r̶m̶a̶l̶ ̶w̶e̶i̶g̶h̶t̶ ̶i̶n̶ ̶t̶h̶e̶ ̶s̶t̶u̶d̶y̶ ̶l̶i̶n̶k̶e̶d̶.̶

edit: this is wrong, see reply below

[PuppyTailWags]

The article explicitly compares overweight, grade 1 obesity, grade 2 & 3 obesity together, obesity generally, relative to normal weight.

> Random-effects summary all-cause mortality HRs for overweight (BMI of 25–<30), obesity (BMI of ≥30), grade 1 obesity (BMI of 30–<35), and grades 2 and 3 obesity (BMI of ≥35) were calculated relative to normal weight (BMI of 18.5–<25).

[stnmtn]

Great point, I completely misread that. Edited my original comment!

[PuppyTailWags]

Yeah I had to read this a few times too! I was totally baffled by having 3 categories for obesity, but one of the categories is grade 2 & 3 categories together, and one of the categories is grade 1, 2, & 3 together.