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Table 1 Baseline Participant Characteristics

From: A randomized trial of an intervention to improve use and adherence to effective coronary heart disease prevention strategies

Characteristic Total Group (N = 160*) Intervention Group (N = 81) Control Group (N = 79)
Mean age 63 63 64
Female 28% 27% 28%
Race:    
   White 86% 88% 84%
   Black 10% 10% 10%
Education:    
   At least some college 90% 98% 82%†
Enrolled in a prescription drug plan 90% 91% 89%
Missed medicine in the last month:    
   Less than 5% of time 92% 90% 95%
   6-25% of time 4% 4% 3%
   26-50% of time 2% 3% 2%
   51-75% of time 0% 0% 0%
   76-95% of time 1% 1% 0%
   More than 95% of time 1% 1% 0%
Have potentially modifiable CHD risk factors:    
   Blood pressure > 140/90 (mmHg) 36% 35% 37%
   Total cholesterol/HDL ratio > 4 54% 53% 51%
   Smoker 13% 14% 13%
   Not using aspirin, but eligible for it 50% 54% 47%
Mean systolic blood pressure (mmHg) 136.9 136.2 137.6
Mean diastolic blood pressure(mmHg) 81.0 81.5 80.4
Mean total cholesterol (mg/dL) 201.1 204.9 197.1
Mean HDL cholesterol (mg/dL) 53 54.1 51.9
Mean predicted CHD risk over 10 yrs 11.3 11.2 11.4
# of possible intervention options for CHD risk:‡    
   0 10% 12% 8%
   1 28% 28% 27%
   2 47% 40% 54%
   3 16% 20% 11%
   4 0% 0% 0%
Have self-efficacy to lower at least 1 CHD risk factor 98% 99% 96%
Are planning best evidence interventions§ 27% 28% 25%
  1. Abbreviations: CHD = Coronary heart disease; HDL = high density lipoprotein
  2. * 160 participants at baseline; 3 missed both primary and follow-up study visits and 3 declined further participation after the primary study visit
  3. † Statistically different between the intervention and control groups (p < .01)
  4. ‡ This includes hypertension medicine, cholesterol medicine, smoking cessation, and aspirin
  5. §Proportion planning to do any of the following intervention options that are supported by the highest quality of evidence: hypertension medicine, cholesterol medicine, smoking cessation, and aspirin