title: Body shape index and mortality in hemodialysis patients.
abstract: OBJECTIVE
  The relationship between various anthropometric parameters and mortality in hemodialysis (HD) patients is conflicting. Recently a new anthropometric parameter emerged, namely, body shape index (BSI). BSI is based on waist circumference (WC) but is independent of height, weight, and body mass index in predicting mortality in the general population. The aim of this study was to determine the relationship between BSI and mortality in HD patients.
  
  
  METHODS
  This retrospective study evaluated the demographic characteristics and anthropometric measures including BSI, laboratory parameters, and mortality data in HD patients in a single center.
  
  
  RESULTS
  There were 142 HD patients enrolled in the study. The median BSI was 0.0816. Because no normal value was defined for BSI, the patients were divided into two groups based on the median BSI: group 1 BSI < 0.0816 and group 2 BSI > 0.0816. During an average follow-up period of 40.1 ± 19.2 mo (range 12-88 mo), 36 (25.4%) patients had died. The Cox regression analysis of independence showed that increased age (hazard ratio [HR], 1.077, 95% confidence interval [CI],1.031-1.125; P = 0.001), presence of diabetes (HR, 2.855, 95% CI, 1.258-6.481; P = 0.012), hemoglobin (HR, 0.629, 95% CI, 0.452-0.875; P = 0.006), and albumin (HR, 0.442, 95% CI, 0.204-0.955; P = 0.038) were independently related with mortality. None of the anthropometric parameters including BSI were related with mortality. Kaplan-Meier analysis showed that there were no differences with respect to mortality among patients in group 1 and group 2 based on median BSI (P = 0.332, log-rank test).
  
  
  CONCLUSIONS
  In conclusion, BSI is not independently associated with mortality in HD patients.
authors.affiliation: Department of Medicine, Division of Nephrology, Konya Numune State Hospital, Konya, Turkey. afsarbrs@yahoo.com
authors.forename: Baris
authors.initials: B
authors.lastname: Afsar
authors.forename: Rengin
authors.initials: R
authors.lastname: Elsurer
authors.forename: Alper
authors.initials: A
authors.lastname: Kirkpantur
mesh_terms: D000328:Adult; D000368:Aged; D001786:Blood Glucose / Q000378:metabolism; D015992:Body Mass Index; D049628:Body Size; D001835:Body Weight; D005260:Female; D005500:Follow-Up Studies; D006454:Hemoglobins / Q000378:metabolism; D006801:Humans; D053208:Kaplan-Meier Estimate; D008297:Male; D008875:Middle Aged; D016016:Proportional Hazards Models; D006435:Renal Dialysis / Q000401:mortality*; D012189:Retrospective Studies; D012307:Risk Factors; D012709:Serum Albumin / Q000378:metabolism; D055105:Waist Circumference
chemical_list: D001786:Blood Glucose; D006454:Hemoglobins; D012709:Serum Albumin
keywords: Body mass index; Body shape index; Dialysis; Mortality; Waist circumference; Waist to hip ratio