Respiratory medicine · 2021
Body mass index as a predictor of mortality in bronchiectasis: A nationwide population-based study.
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Lee Jung Mo, Lee Sang Ah, Han Chang Hoon, Lee Sun Min, Kim Cheong Ju, Lee Sang Chul, Park Seon Cheol
Аннотация
INTRODUCTION: The prognosis of bronchiectasis is not well known. The purpose of this study was to evaluate the association between body mass index (BMI) and mortality in bronchiectasis using a large nationwide population-based cohort.
MATERIAL AND METHODS: Using the National Health Insurance Service-Health Screening Cohort in Korea, individuals with bronchiectasis were identified from 2004 to 2006 and monitored for up to 10 years. Mortality in bronchiectasis was analyzed based on a BMI score <18.5 kg/m2 (underweight), 1.85-22.9 kg/m2 (normal weight), 23.0-24.9 kg/m2 (overweight), and >25.0 kg/m2 (obese).
RESULTS: A total of 2769 individuals with bronchiectasis were included. The underweight, normal weight, overweight, and obese accounted for 5.1%, 40.4%, 25.4%, and 29.3% of all patients with bronchiectasis, respectively. Compared to normal weight, underweight in bronchiectasis was associated with increased all-cause mortality (hazard ratio [HR] = 2.60; 95% confidence interval [CI] = 1.92-3.54), while obese was associated with decreased all-cause mortality (HR = 0.71; 95% CI = 0.55-0.93). This relationship between BMI and mortality was more prominent in respiratory disease-related mortality.
CONCLUSIONS: BMI is a predictor of mortality in bronchiectasis. Underweight is associated with increased mortality among individuals with bronchiectasis while obese is associated with decreased mortality.
MATERIAL AND METHODS: Using the National Health Insurance Service-Health Screening Cohort in Korea, individuals with bronchiectasis were identified from 2004 to 2006 and monitored for up to 10 years. Mortality in bronchiectasis was analyzed based on a BMI score <18.5 kg/m2 (underweight), 1.85-22.9 kg/m2 (normal weight), 23.0-24.9 kg/m2 (overweight), and >25.0 kg/m2 (obese).
RESULTS: A total of 2769 individuals with bronchiectasis were included. The underweight, normal weight, overweight, and obese accounted for 5.1%, 40.4%, 25.4%, and 29.3% of all patients with bronchiectasis, respectively. Compared to normal weight, underweight in bronchiectasis was associated with increased all-cause mortality (hazard ratio [HR] = 2.60; 95% confidence interval [CI] = 1.92-3.54), while obese was associated with decreased all-cause mortality (HR = 0.71; 95% CI = 0.55-0.93). This relationship between BMI and mortality was more prominent in respiratory disease-related mortality.
CONCLUSIONS: BMI is a predictor of mortality in bronchiectasis. Underweight is associated with increased mortality among individuals with bronchiectasis while obese is associated with decreased mortality.