Type 1 diabetes

Body weight variability as a predictor of cardiovascular outcomes in type 1 diabetes: A nationwide cohort study

Diabetes Obes MetabPublished Nationwide cohort study

Main finding · Composite of nonfatal MI, nonfatal stroke and all-cause mortalityResult — go to the resultHazard ratio 1.42 95% CI 1.24–1.62

Authors' conclusion

High BWV is associated with an increased risk of CVD and all-cause mortality in individuals with T1D, independently of canonical risk factors. Weight trends, sex and glycaemic control do not modify such association while older age attenuates it.

Study context

Population
Individuals with T1D without CVD at baseline with ≥3 body weight measurements over three consecutive years, Swedish National Diabetes Registerof 36,333 in register
Participants
19,373 individuals
Exposure
Highest vs lowest quartile of body weight variability
Outcome
Composite of:
  • Nonfatal MI
  • Nonfatal stroke
  • All-cause mortality
Follow-up
12.7 ± 4.6 year
Methodological detailsSwedish National Diabetes Register, adjusted Cox regression models
  • Swedish National Diabetes Register
  • Adjusted Cox regression models

Main finding

As reported in the abstract

Hazard ratio

1.42

95% CI 1.24–1.62

Highest BWVvs Lowest BWV
HR 1.42 (95% CI 1.24–1.62)

Observational data: associations, not effects.

Further findings

All-cause mortality

HR (95% CI)
High BWV51% increased risk1.51 (1.28–1.78)

Peripheral artery disease

HR (95% CI)
High BWV37% increased risk1.37 (1.06–1.77)

Hospitalization for HF

HR (95% CI)
High BWV55% increased risk1.55 (1.20–2.01)

Subgroups (weight trends, sex, glycaemic control, elderly)

No interaction for weight trends, sex or degree of glycaemic control
In elderly individuals, association of body weight variability (BWV) with primary endpoint no longer significant

Original publication

Body weight variability as a predictor of cardiovascular outcomes in type 1 diabetes: A nationwide cohort study. Diabetes Obes Metab. Published 28 October 2024. doi:10.1111/dom.16038

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