Impact of neighbourhood-level socioeconomic status, traditional coronary risk factors, and ancestry on age at myocardial infarction onset: A population-based register study

Table 3 Mean age at AMI onset and percentage of previous AMI in the western (mean high SES) and north-eastern (mean low SES) districts of Oslo

	Total population		Presumed Northwest-European ancestry
	Western districts	North-eastern districts	Western districts	North-eastern districts
Mean age (years) at AMI onset	73.89	68.99**	74.36	72.78
Mean age (years) at AMI onset when only including patients with a first time AMI	71.97	65.88**	70.27	72.49
Previous AMI (%)	27.42	35.55*	27.17	38.16*

*p ≤ 0.05 and **p ≤ 0.001 compared with the corresponding population in the western districts. The number of patients reported having a first time AMI were 262, 136, 252, and 94 in the four populations, respectively. Previous myocardial infarction was reported as unknown in 30, 4, 29, and 4 patients in the four populations, respectively

ISSN: 1471-2261