From: Expert Delphi survey on research and development into drugs for neglected diseases
 | very effective | effective | ineffective | very ineffective | no judgment |
---|---|---|---|---|---|
Orphan drug laws | 7.1% | 54.3% | 17.1% | 0% | 21.4% |
Market exclusivity | 22.1% | 33.8% | 17.6% | 4.4% | 22.1% |
Tax credits | 14.5% | 47.8% | 10.1% | 1.4% | 26.1% |
Protocol assistance | 13.2% | 41.2% | 14.7% | 0% | 30.9% |
Fee reduction/Fee waivers | 8.8% | 41.2% | 23.5% | 1.5% | 25.0% |