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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).