A study of neutral quality research design reported group RMR mean overestimation error of 132 kcal/d in obese, U.S. residing males. In obese Italian men and women (ages 18-59 years), the Mifflin-St. Jeor equation underestimated group mean RMR by 145 and 120 kcals/d, respectively. In obese Italian women, the Mifflin-St. Jeor equation overestimated group mean of 10 kcals/day with a 95% confidence interval of an overestimation by 298 kcals/d and an underestimation of 279 kcals/day.
Grade I
Overall strength of the available supporting evidence: Grade I - good; Grade II - fair; Grade III - limited; Grade IV - expert opinion; Grade V: not assignable