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. Author manuscript; available in PMC: 2012 Jul 19.
Published in final edited form as: Clin Chem. 2008 May 1;54(7):1190–1196. doi: 10.1373/clinchem.2007.099291

Table 1.

Distribution of covariates in case and matched control study participants.

Covariate Cases Controls
n 239 472
Dehydroepiandrosterone, nmol/L 17.1 (4.3, 46.7) 16.6 (6.1, 37.9)
Dehydroepiandrosterone sulfate, nmol/L 1183 (465, 2389) 1095 (484, 2483)
Age at blood draw, years 62 (51, 68) 62 (50, 68)
Current smokers 78 (32.6) 158 (33.5)
Body mass index, kg/m2 25.9 (20.4, 35.3) 24.4 (20.7, 31.3)
Waist-to-hip ratio 0.81 (0.72, 0.89) 0.78 (0.71, 0.87)
Average physical activity, MET-hours per week 8.7 (1.2, 37.2) 9.9 (1.0, 37.7)
Alcohol consumption, g/day 1.4 (0, 16.9) 3.1 (0, 19.9)
Parental history of myocardial infarction 86 (36.0) 102 (21.6)
History of hypertension 131 (54.8) 126 (26.7)
History of diabetes 44 (18.4) 29 (6.1)
History of hypercholesterolemia 25 (10.5) 47 (10.0)
Use of aspirin in 1988
    None 80 (33.5) 149 (31.6)
    1–14 days per month 88 (36.8) 218 (46.2)
    >14 days per month 63 (26.4) 93 (19.7)
Postmenopausala 204 (85.4) 396 (83.9)
Use of female hormones in the 3 months before blood collection 73 (30.5) 171 (36.2)
Plasma total cholesterol, mmol/L 6.09 (4.74, 7.51) 5.78 (4.64, 7.12)
Plasma HDL cholesterol, mmol/L 1.29 (0.90, 1.83) 1.51 (1.05, 2.16)
Ratio of plasma total to HDL cholesterol 4.51 (3.13, 7.04) 3.83 (2.55, 5.74)
Plasma CRP, mg/L 3.1 (0.7, 13.7) 2.2 (0.5, 9.2)

Data are median (10th, 90th percentile) or n (%). Median age (range; 10th, 90th percentiles) of diagnosis of myocardial infarction was 65.8 (44.9–76.2; 54.2, 73.6) years. Median time from blood sample to diagnosis of myocardial infarction was 4.6 (0.08–8.7; 1.25, 7.6) years. Information was available for the covariates in >95% of study participants, with the exception of waist-to-hip ratio (165 cases and 334 controls). MET, metabolic equivalent.

a

There were 23/204/12 cases and 57/396/19 controls of pre-/post-/uncertain menopausal status, respectively.

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