Sino-nasal Outcome Test (SNOT-22) Please see the full Sino-nasal Outcome Test (SNOT-22) here. The test has 22 questions with scores from 0-5 for each question. Studies have described the following stratifications: Mild: 8-20 Moderate: >20-50Severe: >50 Toma S, Hopkins C. Stratification of SNOT-22 scores into mild, moderate or severe and relationship with other subjective instruments. Rhinology. 2016;54(2):129-33. Kennedy JL, Hubbard MA, Huyett P, Patrie JT, Borish L, Payne SC. Sino-nasal outcome test (SNOT-22): a predictor of postsurgical improvement in patients with chronic sinusitis. Ann Allergy Asthma Immunol. 2013;111(4):246-251.e2.