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[Obesity and mortality. Italian epidemiologic data].
A Menotti1, G C Descovich, M Lanti
1Laboratorio di Epidemiologia e Biostatistica, Istituto Superiore di Sanità, Roma.
Recenti Progressi in Medicina
|March 1, 1992
Summary
Obesity indicators like body mass index (BMI) show an inverted U-shaped link to mortality risk. This relationship, observed in Italian studies, suggests optimal BMI ranges for lower mortality, though nuances exist for specific demographics.
Area of Science:
- Epidemiology
- Public Health
- Biostatistics
Context:
- Analysis of obesity indicators in Italian populations.
- Utilized data from three distinct epidemiological studies: Seven Countries Study, Brisighella study, and NFR study.
- Involved a significant participant pool with extended follow-up periods.
Purpose:
- To investigate the relationship between obesity indicators (BMI, skinfold thickness) and all-cause mortality.
- To determine the shape and significance of this association across different demographic groups and follow-up durations.
Summary:
- Univariate analysis revealed an inverted J-shaped relationship between BMI and mortality, with minimal risk at BMI values of 27-29.
- This pattern was less consistent in women and older men.
- Multivariate analysis confirmed the parabolic BMI-mortality association, with the higher-risk left branch potentially influenced by factors like smoking and pre-existing conditions.
Impact:
- Provides crucial insights into the complex association between body weight and mortality risk.
- Highlights the importance of considering demographic factors and confounding variables in obesity research.
- Informs public health strategies and clinical guidelines regarding weight management and mortality prediction.