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. Author manuscript; available in PMC: 2018 Dec 14.
Published in final edited form as: Eur Respir J. 2017 Dec 14;50(6):1701134. doi: 10.1183/13993003.01134-2017

Table 3.

Criteria used to define low FFMI stratified by BMI category in COPD cases in COPDGene. Values denote N with percentage of BMI category in parentheses.

BMI Category Schols Classification UK Biobank Normative Values
Normal Low FFMIPMA Normal Low FFMIPMA
<18.5 7 (8%) 81(92%) 71 (81%) 17 (19%)
18.5-25 668 (71%) 277 (29%) 720 (76%) 225 (24%)
25-30 1028 (100%) 0 (0%) 915 (89%) 113(11%)
>30 1060 (100%) 0 (0%) 1015 (96%) 45 (4%)

Abbreviations: N – number of individuals, BMI – body mass index, FFMIPMA – fat-free mass index derived from pectoralis muscle area, UK – United Kingdom.