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. Author manuscript; available in PMC: 2013 Jul 9.
Published in final edited form as: Med Care Res Rev. 2009 Jun 29;66(6):658–681. doi: 10.1177/1077558709338485

Table 1. Survey questions and mean responses for variables used in this study.

Questionnaire Items & Variable Names Mean Standard Deviation
Certainty: Using a scale of 0-1, with 0 indicating no certainty and 1 indicating complete certainty, how certain are you that this patient has CHD (rescaled for our analysis) 0.57 0.23
Tests: Which tests or lab work would you order today?
 Number of tests ordered 6.52 2.42
Medications: Which medications would you prescribe today?
 Number of medications prescribed 2.24 1.32
Advice: What specific advice would you offer this patient today?
 Pieces of advice given 4.13 3.34
Questions: In addition to information elicited in the vignette, what other information would you like to obtain before deciding what's going on with the patient today?
 Number of questions asked 11.19 6.04
Patient characteristics
 Percent Female (vs. Male) 50.0 -
 Percent 75 (vs. 55) 50.0 -
 Percent Black (vs. White) 50.0 -
 Percent Job=Teacher (vs. Job=Janitor) 50.0 -
IT Variables (Percent Yes): Which of the following resources (programs or tools) do you use in your practice? Please select YES or NO for each of the following:
 DP: “PDA or computer-based tools for estimating individual patients' risk of specific diseases” 51.0 -
 Reminders: “Electronic reminders in either your medical records or your scheduling systems (electronic appointment or testing reminders, etc.)” 53.4
 Feedback: “Any types of audit, feedback, or tracking reports (electronic, paper, telephone or fax)” 79.8
Proxy variables for unobserved MD characteristics 0.0
 Email: “Electronic communications (email or other web-based communications) with patients” (Percent Yes) 28.2 -
  “In our group practice we value information technologies” (Percent “often/a great extent” vs. “sometimes/not at all”) 82.2 -
  “In our group practice we are quick to adopt new techniques and practices” (Percent “often/a great extent” vs. “sometimes/not at all”) 48.6 -
MD controls
 Experience (years) 18.22 10.57
 Percent Female (vs. Male) 50.0 -
 Percent US/Canadian Medical School (vs. Other) 85.4 -
 Percent (Graduate from top 25 schools) 21.3 -
 Percent (Practice Size Solo) 21.0
 Percent (Practice Size 2-3) 22.6 -
 Percent (Practice Size 4-10) 31.0 -
 Percent (Practice Size 11+) 25.4 -
 Percent South Carolina (vs. North Carolina) 34.0 -
 Percent Urban Area (vs. Rural Area) 68.0 -