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Table 2 Real and counterfactual number of new indications additions

From: Repurposing existing drugs for new uses: a cohort study of the frequency of FDA-granted new indication exclusivities since 1997

Time to generic* Probability of having a new indication Number of new indications
Real (%) Counterfactual (%) Real Counterfactual
G0,5 = 1 1.07 1.29 34 41
G5,10 = 1 1.64 1.64 45 45
G10+ = 1 1.80 1.80 34 34
Gneg = 1 0.08 0.37 3 14
Total    116 134
  1. \({G}_{neg}\) indicates observations following generic entry; \({G}_{\mathrm{0,5}}\) observations when generic entry is within 5 years, \({G}_{\mathrm{5,10}}\) observations when generic entry is within 5 to 10 years from 5 to 10 years; \({G}_{10+}\) observations when generic entry is more than 10 years away