Table 1.

Baseline characteristics of patients in the derivation and validation cohorts

Characteristics	Derivation cohort	Validation cohort	p Value
Age (mean (SD))	55 (12)	60 (14)	0.20*
Male sex	68 (45)	57 (54)	0.17†
Prior MI	7 (5)	26 (25)	<0.01†
Cardiac risk factors
Smoker	22 (15)	12 (11)	0.45†
Hypertension	72 (48)	60 (57)	0.16†
Hypercholesterolemia	62 (41)	58 (55)	0.03†
Family history	52 (34)	27 (26)	0.13†
Diabetes mellitus	23 (15)	22 (21)	0.25†
Mean no (SD) risk factors	1.9 (1.3)	2.2 (1.3)	0.04*
Total	151	106	257

MI, myocardial infarction.

Values are presented as n (%), unless specified otherwise.

^*Mann—Whitney U test for continuous and ordinal variables.

^†χ² Test for categorical variables.