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. Author manuscript; available in PMC: 2015 Oct 1.
Published in final edited form as: Clin Trials. 2014 Jun 5;11(5):565–575. doi: 10.1177/1740774514536000

Table 2.

Descriptive Statistics: Physician Level Variables

CCOP Survey Respondents n=481
Mean or Proportion of Sample Range
Outcome

2011 Patient Enrollment 4.7* (8.1) 0, 62

Descriptive Variables

Gender
  Male 74%
  Female 26%
Race
  White 75%
  Asian 15%
  African-American 1%
  Other 9%

Variables included in Model Attitudes

Affect 4.6 (0.7) 2,5
Beliefs: Exclude Pts. 3.4 (1.2) 1,5
Beliefs: Complexity of Trials 2.4 (1.2) 1,5
Values 4.7 (0.6) 1,5

Personal Characteristics

Age 52.6 (9.8) 34,82
Practice Type
  Group Practice 78%
  Hospital-Based 12%
  Solo Practice 4%
  Other/None Listed 6%
Training Location
  U.S Trained 80%
  Non U.S Trained 20%
Tenure (Yrs. In Practice) 25.7 (10.1) 8, 57
Medical Specialty
  Hematology Oncology 40%
  Radiation Oncology 21%
  Other Specialty 18%
  Medical Oncology 11%*
  Surgery 10%*
Principal Investigator 9%

Standard deviations in parentheses

*

Indicates significant difference between survey respondents and non-survey respondents

Other race includes American Indian, Native Hawaiian/Pacific Islander, More than one race, or unknown

Hematology oncology includes blood banking, hematology oncology, hematology

Radiation Oncology includes diagnostic radiology, nuclear medicine, radiation oncology, radiology, vascular and interventional radiology

Other specialist includes general practice, gynecological oncology, pediatrics, pediatric hematology, cardiovascular disease etc.

Surgery includes colon and rectal surgery, critical care sugary, general surgery, neurological surgery, surgical oncology, urological surgery etc.