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Julia Hippisley-Cox a Department of General Practice, The Medical
School, Queen's Medical Centre, Nottingham NG7
2UH, b Trent Institute for Health Services
Research, The Medical School, Queen's Medical Centre
Correspondence to: Dr Hippisley-Cox
julia.h-cox{at}nottingham.ac.uk
Objective: To determine the relation between
depression, anxiety, and use of antidepressants and the onset of
ischaemic heart disease.
Design: Population based case-control study.
Setting: All 5623 patients registered with one
general practice.
Subjects: 188 male cases with ischaemic heart disease
matched by age to 485 male controls without ischaemic heart disease;
139 female cases with ischaemic heart disease matched by age to 412 female controls.
Main outcome measure: Adjusted odds ratios calculated
by conditional logistic regression.
Results: The risk of ischaemic heart disease was
three times higher among men with a recorded diagnosis of depression
than among controls of the same age (odds ratio 3.09; 95% confidence
interval 1.33 to 7.21; P=0.009). This association persisted when
smoking status, diabetes, hypertension, and underprivileged area
(UPA(8)) score were included in a multivariate model (adjusted 2.75;
1.13 to 6.69; P=0.03). Men with depression within the preceding 10 years were three times more likely to develop ischaemic heart disease
than were the controls (3.13; 1.27 to 7.70; P=0.01). Men with ischaemic
heart disease had a higher risk of subsequent ischaemic heart disease
than men without ischaemic heart disease (adjusted 2.34; 1.34 to 4.10;
P=0.003). Depression was not a risk factor for ischaemic heart disease
in women on multivariate analysis (adjusted 1.34; 0.70 to 2.56;
P=0.38). Anxiety and subsequent ischaemic heart disease were not
significantly associated in men or women.
Conclusion: Depression may be an independent risk
factor for ischaemic heart disease in men, but not in
women.
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