Depression risk in patients with coronary heart disease in Germany

Table 1 Characteristics of coronary heart disease patients and matched controls treated in primary care practices in Germany

Variables	CHD group	Control group	P value
n	59992	59992
Age (yr)	68.0 (11.3)	68.0 (11.3)	1
Aged ≤ 60 (%)	26.7	26.7	1
Aged 61-70 (%)	26.5	26.5	1
Aged 71-80 (%)	32.6	32.6	1
Aged > 80 (%)	14.3	14.3	1
Males (%)	55.9	55.9	1
Follow-up time (yr)	3.6 (1.5)	3.6 (1.5)	1
Past depression diagnosis (> 12 mo prior to index date)	11.1	11.1	1
Co-diagnosis (%)
Diabetes	35.9	23.4	< 0.001
Hypertension	78.7	59.4	< 0.001
Myocardial infarction	11.8	0.6	< 0.001
Cardiac arrhythmias	25.7	14.3	< 0.001
Heart failure	18.4	7.4	< 0.001
Stroke	9.2	5.6	< 0.001
Cancer	11.9	11.1	< 0.001
Dementia	4.9	4.5	< 0.001
Osteoarthritis	31.4	27.6	< 0.001
Osteoporosis	10.3	8.4	< 0.001

CHD: Coronary heart disease.