Table 2 Main characteristics of the 77 randomized controlled trials of SLIT
From: Recommendations for appropriate sublingual immunotherapy clinical trials
Allergen | Grass | Dust mite | Parietaria | Ragweed | Others |
34 | 20 | 5 | 5 | 13 | |
Duration | < 6 months | 6-12 months | 12-24 months | > 24 months | |
31 | 21 | 21 | 4 | ||
Patients | <50 | 51-100 | 101-200 | >200 | |
32 | 21 | 11 | 13 |