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Geographic and Age Variations in Low Body Mass Index Among Community-Dwelling Older People in Xinjiang: A Cross-Sectional Study
- Source :
- Frontiers in Medicine, Vol 8 (2021), Frontiers in Medicine
- Publication Year :
- 2021
- Publisher :
- Frontiers Media SA, 2021.
-
Abstract
- Background: Studies have shown an association between undernutrition and increased adverse outcome, as well as substantial geographic and age variations in undernutrition. Body mass index (BMI), a core indicator of undernutrition, is easy to measure and reflects the nutritional and health status of the human body. It is a simple and suitable tool for epidemiological investigations in large sample populations. Herein, we provide the first description of geographic and age variations in the prevalence of low BMI among community-dwelling older people in Xinjiang.Methods: From January 2019 to December 2019, using a multi-stage random sampling method, we conducted a cross-sectional epidemiological survey of the community-dwelling older people in Xinjiang at different latitudes. Of the 87,000 participants, the statistical analyses included 86,514 participants with complete data.Results: In Xinjiang, the prevalence of low BMI was 7.7% in the community-dwelling older people. The BMI gradually decreased with increasing age and gradually increased with latitude. The prevalence of low BMI in northern Xinjiang was 5.3%, which was significantly lower than that in eastern (7.7%) and southern (9.3%) Xinjiang. In the 60–69-, 70–79-, 80–89-, and ≥90-year age groups, the prevalence rates of low BMI were 5.8, 7.9, 10.0, and 13.9%, respectively. After adjusting for confounding factors (sex, ethnic group, hypertension, diabetes, hyperlipemia, smoking, and drinking), multivariate logistic regression analysis showed that the odds ratios (95% CI) for low BMI in eastern and southern Xinjiang were 1.165 (1.056–1.285) and 1.400 (1.274–1.538), respectively, compared to northern Xinjiang. The adjusted odds ratios (95% CI) for low BMI in the 70–79-, 80–89-, and ≥90-year age groups were 1.511 (1.39–1.635), 2.233 (2.030–2.456), and 3.003 (2.439–3.696), respectively, compared to the 60–69-year age group.Conclusion: The results of this study revealed geographic and age variations in the prevalence of low BMI in the community-dwelling older people in Xinjiang. The prevalence of low BMI gradually increased as the latitude decreased and as age increased.
- Subjects :
- 0301 basic medicine
medicine.medical_specialty
Medicine (General)
Cross-sectional study
Prevalence
Logistic regression
03 medical and health sciences
BMI
0302 clinical medicine
R5-920
Epidemiology
Medicine
030212 general & internal medicine
Original Research
030109 nutrition & dietetics
business.industry
Xinjiang
Confounding
aging
Odds ratio
General Medicine
medicine.disease
undernutrition
Malnutrition
business
community-dwelling older people
Body mass index
Demography
Subjects
Details
- Language :
- English
- ISSN :
- 2296858X
- Volume :
- 8
- Database :
- OpenAIRE
- Journal :
- Frontiers in Medicine
- Accession number :
- edsair.doi.dedup.....71601441355d5c833fd3c834140690ae
- Full Text :
- https://doi.org/10.3389/fmed.2021.675931