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Table 3 Odds ratios from regression analysis of factors associated with price increases above thresholds

From: Generic prescription drug price increases: which products will be affected by proposed anti-gouging legislation?

  2013-2014
% > Medical CPI % > 15% % > 20%
Odds Ratio p-value Odds Ratio p-value Odds Ratio p-value
Manufacturer count per product
 1 1.53 <0.01 1.33 0.02 1.33 0.03
 2 1.26 0.04 1.31 0.03 1.07 0.60
 3 1.05 0.64 1.10 0.11 1.35 0.01
 4 0.93 0.48 1.10 0.42 1.11 0.42
 ≥ 5 Ref - Ref - Ref -
Formulation
 All Others Ref - Ref - Ref -
 Injectable 0.88 0.30 0.90 0.46 0.97 0.85
 Oral 0.83 0.10 1.02 0.90 1.11 0.39
Patent Status
 Branded Generic Ref - Ref - Ref -
 Generic 0.49 <0.01 0.81 0.09 0.97 0.84
Volume in previous period
 Volume >1,000 units Ref - Ref - Ref -
 Volume <1,000 units 1.28 0.02 1.38 <0.01 1.46 <0.01
Orphan Drug Designation
 No Ref - Ref - Ref -
 Yes 1.15 0.15 1.04 0.71 1.12 0.31