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Table 4 Logistic regression and ordered logistic regression modeling likelihood of participating in bundled payment programa

From: Medical oncologists’ willingness to participate in bundled payment programs

  Logistic regression Ordered logistic regression
Category Odds ratio p-value 95% confidence interval Odds ratio p-value 95% confidence interval
Bundled payment amount
 $5000 Ref    Ref   
 $10,000 1.60 0.16 0.83–3.07 1.82 0.01 1.16–2.86
 $15,000 3.19 < 0.001 1.69–6.03 2.35 < 0.001 1.45–3.79
 $20,000 1.94 0.07 0.96–3.93 1.87 0.021 1.01–3.17
Age 1.03 0.005 1.01–1.05 1.02 0.01 1.00–1.04
Gender       
 Male Ref    Ref   
 Female 0.48 0.009 0.28–0.83 0.60 0.009 0.41–0.88
Level of involvement in insurance contracting decisions for practice
 Somewhat/slightly/not at all involved Ref    Ref   
 Extremely/considerably involved 1.55 0.10 0.92–2.62 1.04 0.86 0.67–1.61
Views about the costs of cancer care:
High cost drugs should not be offered to patients when they have minimal effect on survival.
 Somewhat or strongly disagree/neither agree nor disagree Ref    Ref   
 Somewhat or strongly agree 2.09 0.002 1.30–3.38 1.61 0.009 1.12–2.29
Patients should have access to all effective treatments for their cancer regardless of cost.
 Somewhat or strongly disagree/neither agree nor disagree Ref    Ref   
 Somewhat or strongly agree 1.02 0.93 0.61–1.71 0.96 0.84 0.65–1.42
Oncologists have a responsibility to balance the potential benefit of a drug with the potential cost of the drug.
 Somewhat or strongly disagree/neither agree nor disagree Ref    Ref   
 Somewhat or strongly agree 1.01 0.98 0.59–1.73 1.34 0.17 0.88–2.04
It is only important to consider the costs of treatment if they are not covered by insurance.
 Somewhat or strongly disagree/neither agree nor disagree Ref    Ref   
 Somewhat or strongly agree 1.31 0.32 0.77–2.22 1.27 0.26 0.84–1.95
  1. aThe regression model was adjusted for physicians’ geographic location by US state as well as for characteristics of physicians’ patient panels, including the percentage of patients who are black, have no health insurance, and are covered by Medicaid. Responses to questions about physicians’ patient panels were collected on a 5-point scale (< 1%, 1–5%, 6–20%, 21–50%, 51–100%), and dichotomized as < 5% of patients versus 6–100%