Table 1

Patient characteristics: at diagnosis or before presentation of first symptom by diagnosis source

Factor	n	%	n	%	n	%
Factor	Total		Primary care		Hospital
Gender
Male	18 440	50.2	4146	54.3	14 297	49.1
Female	18 308	49.8	3489	45.7	14 819	50.9
Age at diagnosis or first HF symptom
Mean	76.1	SD 14.4	75.8	SD 12.8	76.2	SD 14.8
<45	1251	3.4	153	2.0	1098	3.8
45–64	5427	14.8	1156	15.1	4271	14.7
65–74	6707	18.3	1660	21.7	5047	17.3
75–84	11 628	31.6	2662	34.9	8966	30.8
≥85	11 735	31.9	2004	26.2	9731	33.4
Comorbidities before first symptom*
None	1355	9.0	451	10.8	904	8.3
Any of the following	13 702	91.0	3714	89.2	9988	91.7
Atrial fibrillation	3684	24.5	1021	24.5	2663	24.4
Other arrhythmias	2245	14.9	667	16.0	1578	14.5
Myocardial infarction	2142	14.2	662	15.9	1480	13.6
Hypertension	10 529	69.9	2820	67.7	7709	70.8
Stroke	1663	11.0	410	9.8	1253	11.5
Diabetes	3142	20.9	807	19.4	2335	21.4
Congenital heart disease	124	0.8	28	0.7	96	0.9
Coronary artery disease	4760	31.6	1285	30.9	3475	31.9
Peripheral vascular disease	1719	11.4	415	10.0	1304	12.0
Myocarditis	160	1.1	31	0.7	129	1.2
Renal disease	3746	24.9	924	22.2	2822	25.9
Chronic pulmonary disease	5098	33.9	1212	29.1	3886	35.7
Number of comorbidities before first symptom*
0	1355	9.0	451	10.8	904	8.3
1	3006	20.0	885	21.2	2121	19.5
2	3450	22.9	951	22.8	2499	22.9
3	3069	20.4	797	19.1	2272	20.9
≥4	4177	27.7	1081	26.0	3096	28.4

*Denominator=patients with prediagnosis symptoms; numerator=patients with comorbidity recorded before the date of first symptom (defined as the earliest recorded symptom during the 5 years prediagnosis period, including the diagnosis date).
HF, heart failure.