“…On the other hand, other studies including adult and elderly patients on mechanical ventilation reinforce the need for a correction factor for the HB equation, since the equation alone presents low concordance with the REE-IC, underestimating the energy needs for this population. 33,34 Limited accuracy was expected of the estimated REE obtained using the HB multiplied by 1.2 since this equation was developed using men and women who were white, healthy, and of normal weight, with only a limited number of elderly individuals in the sample. 35 In addition, when assessing the agreement of the ICC with the REE-IC and REE-PE, the HB multiplied by 1.2 proved to be the only PE with values between 0.60 and 0.80 for both sexes and, compared with the other 5 PEs, the 95% CI for the ICC was the narrowest, although far from 1.0.…”