Validation of bioelectrical impedance analysis in Ethiopian adults with HIV
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Validation of bioelectrical impedance analysis in Ethiopian adults with HIV. / Hegelund, Maria H; Wells, Jonathan C; Girma, Tsinuel; Faurholt-Jepsen, Daniel; Zerfu, Dilnesaw; Christensen, Dirk Lund; Friis, Henrik; Olsen, Mette Frahm.
In: Journal of Nutritional Science, Vol. 6, e62, 2017.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Validation of bioelectrical impedance analysis in Ethiopian adults with HIV
AU - Hegelund, Maria H
AU - Wells, Jonathan C
AU - Girma, Tsinuel
AU - Faurholt-Jepsen, Daniel
AU - Zerfu, Dilnesaw
AU - Christensen, Dirk Lund
AU - Friis, Henrik
AU - Olsen, Mette Frahm
N1 - CURIS 2017 NEXS 364
PY - 2017
Y1 - 2017
N2 - Bioelectrical impedance analysis (BIA) is an inexpensive, quick and non-invasive method to determine body composition. Equations used in BIA are typically derived in healthy individuals of European descent. BIA is specific to health status and ethnicity and may therefore provide inaccurate results in populations of different ethnic origin and health status. The aim of the present study was to test the validity of BIA in Ethiopian antiretroviral-naive HIV patients. BIA was validated against the 2H dilution technique by comparing fat-free mass (FFM) measured by the two methods using paired t tests and Bland-Altman plots. BIA was based on single frequency (50 kHz) whole-body measurements. Data were obtained at three health facilities in Jimma Zone, Oromia Region, South-West Ethiopia. Data from 281 HIV-infected participants were available. Two-thirds were female and the mean age was 32·7 (sd 8·6) years. Also, 46 % were underweight with a BMI below 18·5 kg/m2. There were no differences in FFM between the methods. Overall, BIA slightly underestimated FFM by 0·1 kg (-0·1, 95 % CI -0·3, 0·2 kg). The Bland-Altman plot indicated acceptable agreement with an upper limit of agreement of 4·5 kg and a lower limit of agreement of -4·6 kg, but with a small correlation between the mean difference and the average FFM. BIA slightly overestimated FFM at low values compared with the 2H dilution technique, while it slightly underestimated FFM at high values. In conclusion, BIA proved to be valid in this population and may therefore be useful for measuring body composition in routine practice in HIV-infected African individuals.
AB - Bioelectrical impedance analysis (BIA) is an inexpensive, quick and non-invasive method to determine body composition. Equations used in BIA are typically derived in healthy individuals of European descent. BIA is specific to health status and ethnicity and may therefore provide inaccurate results in populations of different ethnic origin and health status. The aim of the present study was to test the validity of BIA in Ethiopian antiretroviral-naive HIV patients. BIA was validated against the 2H dilution technique by comparing fat-free mass (FFM) measured by the two methods using paired t tests and Bland-Altman plots. BIA was based on single frequency (50 kHz) whole-body measurements. Data were obtained at three health facilities in Jimma Zone, Oromia Region, South-West Ethiopia. Data from 281 HIV-infected participants were available. Two-thirds were female and the mean age was 32·7 (sd 8·6) years. Also, 46 % were underweight with a BMI below 18·5 kg/m2. There were no differences in FFM between the methods. Overall, BIA slightly underestimated FFM by 0·1 kg (-0·1, 95 % CI -0·3, 0·2 kg). The Bland-Altman plot indicated acceptable agreement with an upper limit of agreement of 4·5 kg and a lower limit of agreement of -4·6 kg, but with a small correlation between the mean difference and the average FFM. BIA slightly overestimated FFM at low values compared with the 2H dilution technique, while it slightly underestimated FFM at high values. In conclusion, BIA proved to be valid in this population and may therefore be useful for measuring body composition in routine practice in HIV-infected African individuals.
KW - Bioelectrical impedance analysis
KW - Body composition
KW - HIV
KW - African population
U2 - 10.1017/jns.2017.67
DO - 10.1017/jns.2017.67
M3 - Journal article
C2 - 29299309
VL - 6
JO - Journal of Nutritional Science
JF - Journal of Nutritional Science
SN - 2048-6790
M1 - e62
ER -
ID: 188115951