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https://arthritis-research.biomedcentral.com/articles/10.1186/s13075-017-1427-5
- Jasvinder A. SinghEmail author,
- Rekha Ramachandaran,
- Shaohua Yu,
- Shuo Yang,
- Fenglong Xie,
- Huifeng Yun,
- Jie Zhang and
- Jeffrey R. Curtis
Arthritis Research & Therapy201719:228
© The Author(s). 2017
Received: 26 January 2017
Accepted: 11 September 2017
Published: 17 October 2017
Abstract
Background
Gout is a risk factor for
cardiovascular disease, but associations with specific cardiovascular
outcomes, myocardial infarction (MI), and stroke are unclear. Our
objective in the present study was to assess whether gout is as strong a
risk factor as diabetes mellitus (DM) for incident MI and incident
stroke.
Methods
In this retrospective study,
we used U.S. claims data from 2007 to 2010 that included a mix of
private and public health plans. Four mutually exclusive cohorts were
identified: (1) DM only, (2) gout only, (3) gout and DM, and (4) neither
gout nor DM. Outcomes were acute MI or stroke with hospitalization. We
compared the age- and sex-specific rates of incident MI and stroke
across the four cohorts and assessed multivariable-adjusted HRs.
Results
In this study, 232,592
patients had DM, 71,755 had gout, 23,261 had both, and 1,010,893 had
neither. The incidence of acute MI was lowest in patients with neither
gout nor DM, followed by patients with gout alone, DM alone, and both.
Among men >80 years of age, the respective rates/1000 person-years
were 14.6, 25.4, 27.7, and 37.4. Similar trends were noted for stroke
and in women. Compared with DM only, gout was associated with a
significantly lower adjusted HR of incident MI (HR 0.81, 95% CI
0.76–0.87) but a similar risk of stroke (HR 1.02, 95% CI 0.95–1.10).
Compared with patients with DM only, patients with both gout and DM had
higher HRs for incident MI and stroke (respectively, HR 1.35, 95% CI
1.25–1.47; HR 1.42, 95% CI 1.29–1.56).
Conclusions
Gout is a risk equivalent to
DM for incident stroke but not for incident MI. Having both gout and DM
confers incremental risk compared with DM alone for both incident MI and
stroke.
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