S D Nichols1, F Cadogan. 1. Department of Agricultural Economics and Extension, University of the West Indies, St Augustine, Trinidad and Tobago. snichols@trinidad.net
Abstract
OBJECTIVE: To evaluate the diagnostic utility of recommended body mass index (BMI)-based classification systems in detecting excess body fat (BF) in an Afro-Caribbean adolescent population. SUBJECTS: All adolescents aged 12-18 years were invited to participate in the study. A total of 3749 persons participated fully in the study. RESULT: Males (12.2%) (95% confidence interval (CI): 10.7, 13.9) and females (43.6%) (95% CI: 41.5, 45.7) had excess adiposity. Specificities were high for all cutoff values (range 90.1-99.7%). Sensitivities ranged from 25.7 to 86.4% and from 15.6 to 54.4% for Centre for Disease Control (CDC) and International Obesity Task Force (IOTF) cutoff values, respectively. The mean areas under the receiver-operating characteristic curves ranged from 62.7 to 88.2% in males and 57.7 to 75.1% in females, while positive likelihood ratios ranged from 8.7 to 90.9 for the recommended BMI cutoff values. CONCLUSIONS: Overall, the CDC cutoffs had a higher sensitivity than the IOTF cutoffs in screening for excess fat. Specificities were high for cutoff values in both systems and would produce fewer false negatives.
OBJECTIVE: To evaluate the diagnostic utility of recommended body mass index (BMI)-based classification systems in detecting excess body fat (BF) in an Afro-Caribbean adolescent population. SUBJECTS: All adolescents aged 12-18 years were invited to participate in the study. A total of 3749 persons participated fully in the study. RESULT: Males (12.2%) (95% confidence interval (CI): 10.7, 13.9) and females (43.6%) (95% CI: 41.5, 45.7) had excess adiposity. Specificities were high for all cutoff values (range 90.1-99.7%). Sensitivities ranged from 25.7 to 86.4% and from 15.6 to 54.4% for Centre for Disease Control (CDC) and International Obesity Task Force (IOTF) cutoff values, respectively. The mean areas under the receiver-operating characteristic curves ranged from 62.7 to 88.2% in males and 57.7 to 75.1% in females, while positive likelihood ratios ranged from 8.7 to 90.9 for the recommended BMI cutoff values. CONCLUSIONS: Overall, the CDC cutoffs had a higher sensitivity than the IOTF cutoffs in screening for excess fat. Specificities were high for cutoff values in both systems and would produce fewer false negatives.
Authors: Richard A Scribner; Roger L Radix; Aubrey E Gilliland; Claudia Leonardi; Tekeda F Ferguson; Trevor P Noel; Rebecca G Andall; Naomi R Andall; Christal Radix; Rhoda Frank; Jonell Benjamin; Jenifer James; Romero Benjamin; Randall L Waechter; Melinda S Sothern Journal: Front Public Health Date: 2018-08-03
Authors: Theodosia Adom; André Pascal Kengne; Anniza De Villiers; Rose Boatin; Thandi Puoane Journal: Int J Environ Res Public Health Date: 2019-12-19 Impact factor: 3.390