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Table 2 Odds ratios and c-statistics for unrecognized myocardial infarction in the basic assessment tool

From: Assessment tools for unrecognized myocardial infarction: a cross-sectional analysis of the REasons for geographic and racial differences in stroke population

  Univariate c-statistic Odds ratio (95% CI) Odds ratio (95% CI)
Unadjusted Backwards selection*
Age (10 years) 0.602 1.45 (1.35-1.57) 1.38 (1.27-1.49)
Sex 0.520   
 Male   1.00 (reference) --
 Female   0.84 (0.72-0.98) --
Race 0.504   
 White   1.00 (reference) 1.00 (reference)
 African-American   1.03 (0.89-1.20) 0.93 (0.79-1.09)
Smoking status 0.531   
 Never smoker   1.00 (reference) 1.00 (reference)
 Past smoker   1.13 (0.96-1.33) 1.08 (0.92-1.28)
 Current smoker   1.42 (1.16-1.75) 1.60 (1.29-1.98)
Alcohol use 0.509   
 None   1.00 (reference) --
 Moderate   0.97 (0.82-1.13) --
 Heavy   0.75 (0.49-1.15) --
History of stroke 0.512 1.60 (1.19-2.16) --
History of transient ischemic attack 0.509 1.58 (1.11-2.26) 1.18 (0.82-1.69)
History of deep vein thrombosis 0.500 1.02 (0.72-1.45) 0.89 (0.63-1.28)
History of peripheral vascular disease 0.502 1.43 (0.79-2.57) --
History of dialysis 0.501 2.24 (0.68-7.36) --
History of falls 0.516 1.24 (1.03-1.51) 1.15 (0.95-1.40)
Self-reported diabetes 0.528 1.40 (1.18-1.66) 1.25 (1.04-1.50)
Self-reported hypertension 0.568 1.78 (1.52-2.09) 1.56 (1.32-1.86)
Self-reported dyslipidemia 0.504 1.04 (0.89-1.20) --
Family history of myocardial infarction 0.513 0.89 (0.76-1.04) --
Systolic blood pressure (10 mmHg) 0.564 1.15 (1.10-1.19) 1.08 (1.03-1.13)
Diastolic blood pressure (10 mmHg) 0.510 1.06 (0.98-1.15) --
Current use of antihypertensives 0.572 1.81 (1.55-2.12) --
Body mass index (5 kg/m2) 0.524 0.95 (0.90-1.01) 0.89 (0.83-0.96)
Body mass index squared (5[kg/m2]2) 0.521 1.004 (1.001-1.007) 1.008 (1.003-1.012)
  1. * C statistic for backward selection model = 0.638 (95% CI 0.617-0.659).