Controlled direct effect of psychiatric disorders on cardiovascular disease: evidence from a large Kurdish cohort

Zahra Darabi1, Farid Najafi2, Roya Safari-Faramani3

  • 1Department of Epidemiology, School of Public Health, Kermanshah University of Medical Sciences, 6719851351, Kermanshah, Iran.

Insights

Psychiatric disorders increase cardiovascular disease risk. Even with good oral hygiene, this link persists, suggesting targeted interventions for mental health can improve heart health.

Area of Science:

  • Cardiovascular Health
  • Psychiatry
  • Public Health

Background:

  • Psychiatric disorders are strongly linked to cardiovascular diseases (CVD), mortality, and hospital readmissions.
  • Oral and dental hygiene may influence this association, warranting further investigation.
  • Understanding the direct impact of psychiatric conditions on CVD is crucial for effective public health strategies.

Purpose of the Study:

  • To evaluate the controlled direct effect of psychiatric disorders on cardiovascular diseases.
  • To assess the mediating role of oral and dental hygiene in the relationship between psychiatric disorders and CVD.
  • To investigate specific oral health indicators, including hygiene behaviors, oral lesions, and tooth decay, as potential mediators.

Main Methods:

  • Utilized data from the Ravansar Non-communicable Disease (RaNCD) cohort study, including 10,065 adults aged 35-65.
  • Employed a marginal structural model with stabilized inverse probability weights to estimate the controlled direct effect.
  • Analyzed three mediator models: oral/dental hygiene behaviors, oral ulcer/lesions, and decayed, missing, and filled teeth (DMFT).

Main Results:

  • Psychiatric disorders increased CVD odds by 83% (OR=1.83) and by approximately two times when controlling for hygiene behaviors and oral lesions.
  • When DMFT was considered (≤8), the controlled direct effect of psychiatric disorders on CVD was not statistically significant (OR=0.90).
  • A direct relationship between psychiatric disorders and CVD was observed, independent of oral hygiene status.

Conclusions:

  • Psychiatric disorders have a direct impact on cardiovascular diseases, irrespective of oral hygiene.
  • Interventions targeting individuals with psychiatric disorders may effectively reduce the prevalence of cardiovascular diseases.
  • Public health initiatives should consider the interplay between mental health and cardiovascular well-being.
Abstract

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