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Table 3 Interactions bsetween age and risk factors for burdensome costs

From: A National study of burdensome health care costs among non-elderly Americans

Predictor Age 29* OR (95% CI) p-value Age 51* OR (95% CI) p-value p-value for interaction
Income (dollars per year)      
  >50,000 (Ref.) -- -- -- -- --
  30,000-50,000 2.48 (1.73-3.57) <0.001 1.40 (1.21-1.75) <0.001 0.004
  <30,000 2.87 (1.94-4.25) <0.001 2.07 (1.55-2.77) <0.001 0.140
Insurance      
  Employer based (Ref.) -- -- -- -- --
  Uninsured 2.61 (1.96-3.47) <0.001 3.82 (2.93-4.97) <0.001 0.037
Health status      
  Excellent or Good (Ref.) -- -- -- -- --
  Poor or Fair 2.31 (1.64-3.28) <0.001 2.90 (2.33-3.59) <0.001 0.22
  1. *Ages 29 and 51 were the mean ages in the 18–39 and 40–64 age groups. These ages were chosen as representative values for assessing any interaction between age and risk factors for burdensome medical costs.