title: Stratification of SNOT-22 scores into mild, moderate or severe and relationship with other subjective instruments.
abstract: The European Position Paper on Rhinosinusitis and Nasal Polyps provides treatment algorithms based on the mild/moderate/severe (MMS) classification. To date there has been no statistically validated stratification of the SNOT-22 score according to this classification.
  
  
  
  65 consecutive patients diagnosed with CRS completed a SNOT-22, VAS and rated their symptoms according to MMS and impact on quality of life.
  
  
  
  The median SNOT 22 scores varied between the 3 MMS categories. The interquartile ranges for the respective MMS groups were: Mild 8-17, Moderate 22.5-48, Severe 54-83. Median values for the respective MMs groups were: Mild 12, Moderate 36 and Severe 66. 15.38% of patients in the Mild category, 95.24% in the Moderate category and 100% in the Severe category feel their QoL is affected. There was a strongly positive correlation between the SNOT-22 and VAS scores.
  
  
  
  We propose a statistically validated definition for stratification of the SNOT-22, with Mild being defined on the SNOT-22 score as 8-20 inclusive, Moderate as >20-50 and Severe as >50.
authors.affiliation: ENT Dept, Kennington Road, Willesborough, Ashford, Kent, United Kingdom.
authors.forename: Shamim
authors.initials: S
authors.lastname: Toma
authors.affiliation: ENT Dept, Guys and St Thomas Hospitals NHS Trust, London, United Kingdom.
authors.forename: Claire
authors.initials: C
authors.lastname: Hopkins
mesh_terms: D000328:Adult; D000368:Aged; D002908:Chronic Disease; D015331:Cohort Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012220:Rhinitis / Q000175:diagnosis*; D012720:Severity of Illness Index; D012852:Sinusitis / Q000175:diagnosis*; D011795:Surveys and Questionnaires