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- Title
Body mass index and annual estimated GFR decline in Chinese adults with normal renal function.
- Authors
Li, Y; Qin, X; Xie, D; Tang, G; Xing, H; Li, Z; Xu, X; Hou, F
- Abstract
<bold>Background/objectives: </bold>The objective of this study was to examine the association between body mass index (BMI) and the annual estimated glomerular filtration rate (eGFR) decline in a rural lean Chinese cohort.<bold>Subjects/methods: </bold>A total of 2696 subjects with an eGFR ⩾ 60 ml/min per 1.73 m(2) were followed up for 7 years. Our primary outcome was annual eGFR decline, calculated as (eGFR at baseline-eGFR at revisit)/years of follow-up.<bold>Results: </bold>During the 7-year follow-up, the mean (s.d.) of annual eGFR decline was 1.7 (1.9) ml/min per 1.73 m(2) per year. Compared with subjects with normal weight (BMI 19-22.9 kg/m(2)), overweight subjects (BMI 23-26.9 kg/m(2)) had a more rapid annual eGFR decline (β, 0.33; 95% confidence interval (0.18-0.47) ml/min per 1.73 m(2) per year), whereas no significant difference was found when comparing the underweight (<19 kg/m(2)) and the obese (⩾ 27 kg/m(2)) groups with the normal-weight group. Moreover, in the 19- to 26.9-kg/m(2) range, BMI was positively linearly associated with annual eGFR decline (β2, 0.09 (0.05 to 0.12) ml/min per 1.73 m(2) per year, P<0.001), whereas in the <19 (β1, -0.21(-0.45-0.02), P = 0.073; β2 versus β1: P = 0.009) and ⩾ 27 kg/m(2) (β3, -0.24 (-0.48-0.00), P=0.053; β3 versus β2: P=0.010) range a negative but statistically insignificant trend of association was detected.<bold>Conclusions: </bold>Our results suggested a nonlinear S-shaped association between BMI and annual eGFR decline among Chinese adults with normal renal function.
- Subjects
CHINA; KIDNEY physiology; GLOMERULAR filtration rate; OBESITY; RESEARCH; TIME; RESEARCH methodology; MEDICAL cooperation; EVALUATION research; COMPARATIVE studies; BODY mass index; LONGITUDINAL method; RURAL population
- Publication
European Journal of Clinical Nutrition, 2015, Vol 69, Issue 8, p922
- ISSN
0954-3007
- Publication type
journal article
- DOI
10.1038/ejcn.2014.221