From: Estimating the agreement between the metabolic rate calculated from prediction equations and from a portable indirect calorimetry device: an effort to develop a new equation for predicting resting metabolic rate
BMI classes
Mean
95% C.I
N
Normal Weight
21.7
20.8–22.6
84
Overweight
19.1
18.3–19.8
123
Obese Class I
18.2
17.3–19.1
77
Obese Class II
17.4
16.3–18.7
37
Obese Class III
17.0
15.9–18.1
59