Novel anthropometric parameters in the adult population with prediabetes

OBJECTIVE

Although it is assumed that novel-derived anthropometric indices can better reflect cardiometabolic risk than traditional ones, the results are conflicting. Previous studies have mainly focused on patients with type 2 diabetes mellitus. However, studies conducted on populations with prediabetes are scarce. The present study aimed to examine the potential relationship between prediabetes and novel anthropometric parameters [that is, cardiometabolic index (CMI), visceral adiposity index (VAI), lipid accumulation product index (LAP), body roundness index (BRI), and body adiposity index (BAI)] and traditional parameters [that is, waist circumference (WC), hip circumference (HC), body mass index (BMI), waist-to-height ratio (WHtR), and waist-to-hip ratio (WHR)] in adults with prediabetes.

PATIENTS AND METHODS

This case-control cross-sectional study included 177 patients with prediabetes and 609 control subjects. Biochemical and simple anthropometric parameters were measured (WC, HC, body weight, and height), whereas the other parameters were calculated.

RESULTS

WC, CMI, VAI, and LAP independently correlated with prediabetes. Principal component analysis (PCA) was used to extract several factors that correlated with prediabetes. Significant predictive capability was demonstrated for non-traditional anthropometric/lipid-related factors and WHipR-related factors for prediabetes (OR=1.334 and OR=1.202, respectively). However, only non-traditional anthropometric/lipid-related factors (i.e., VAI, CMI, and LAP) demonstrated an independent significant positive relationship with prediabetes in multivariate binary regression analysis.

CONCLUSIONS

CMI, VAI, and LAP could be superior to BAI, BRI, and conventional anthropometric parameters for discriminating patients with prediabetes in the adult population. Prospective trials are needed to confirm our results.

Red cell distribution width is inversely associated with body mass index in late adolescents

OBJECTIVE

There are no studies that investigated the association between red blood cell (RBC) and platelet (PLT) indices in relation to obesity in a cohort of exclusively late adolescents. Hence, we aimed to explore this potential relationship.

PATIENTS AND METHODS

A cohort of adolescents (n=156) aged between 16-19 years was included. Iron homeostasis parameters [i.e. RBC, hemoglobin (HGB), hematocrit (HCT), mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH), and mean corpuscular hemoglobin concentration (MCHC) and red cell distribution width (RDW)] and platelet indices [i.e., PLT, mean platelet volume (MPV), plateletcrit (PCT) and platelet distribution width (PDW)] were determined on the automatic hematology analyzer. Their indexes (i.e. MCV/RBC, MCH/RBC, RDW/MCV, MPV/PLT and PDW/PCT) were calculated.

RESULTS

Univariate binary regression analysis showed negative associations between body mass index (BMI) and RDW, PDW, and PDW/PCT, respectively, and positive associations between BMI and MPV and PCT, respectively. However, only RDW kept the independent negative association with BMI in multivariate binary regression analysis [Odds Ratio (95% Confidence Interval)=0.734 (0.548-0.983); p=0.038].

CONCLUSIONS

Lower RDW values are the independent predictor of higher BMI in the adolescent population. As a low-cost and simply measured parameter, RDW could be a useful diagnostic biomarker in young populations with overweight/obesity.