title: Responsiveness and reliability of the Sinus Control Test in chronic rhinosinusitis.
abstract: BACKGROUND
  The Sinus Control Test (SCT) is a patient-reported questionnaire designed to help physicians identify sub-optimally controlled chronic rhinosinusitis (CRS). This study measures responsiveness to surgery and reliability of the SCT.
  
  
  METHODS
  Adults meeting diagnostic criteria for CRS were recruited from rhinology clinics at a tertiary academic institution. To measure responsiveness, the SCT was administered at baseline and at least 3 months after surgery to 62 CRS patients. To measure reliability, the SCT was administered at two clinical encounters a maximum of 14 days apart to 22 CRS patients.
  
  
  RESULTS
  Total SCT scores significantly improved from baseline to post-operative follow-up, and the distribution of patients with total SCT scores falling into the uncontrolled, partially controlled, and controlled categories before and after surgery were significantly different in the direction of improvement. The SCT met minimum standards for reliability and internal consistency as measured by: test-retest reliability coefficient, intra-class correlation coefficients, and item-total correlations. Cronbach alpha; values with each item deleted were lower than the overall Cronbach alpha. The SCT captures the full range of disease control as measured by floor and ceiling effects.
  
  
  CONCLUSIONS
  The SCT is responsive to surgical intervention and a reliable tool to monitor changes in CRS control levels.
authors.affiliation: Division of Rhinology and Sinus Surgery, Department of Otolaryngology, Head and Neck Surgery, Medical University of South Carolina, Charleston, SC, USA.
authors.forename: P
authors.initials: P
authors.lastname: Kohli
authors.affiliation: Division of Rhinology and Sinus Surgery, Department of Otolaryngology, Head and Neck Surgery, Medical University of South Carolina, Charleston, SC, USA.
authors.forename: Z M
authors.initials: ZM
authors.lastname: Soler
authors.affiliation: Division of Rhinology and Sinus Surgery, Department of Otolaryngology, Head and Neck Surgery, Medical University of South Carolina, Charleston, SC, USA.
authors.forename: K A
authors.initials: KA
authors.lastname: Storck
authors.affiliation: Division of Rhinology and Sinus Surgery, Department of Otolaryngology, Head and Neck Surgery, Medical University of South Carolina, Charleston, SC, USA.
authors.forename: A
authors.initials: A
authors.lastname: Shahangian
authors.affiliation: Department of Otolaryngology, Head and Neck Surgery, University of Toronto, Toronto, ON, Canada.
authors.forename: S M
authors.initials: SM
authors.lastname: Banglawala
authors.affiliation: Otolaryngology, Head and Neck Surgery, Medical University of South Carolina, Charleston, SC, USA.
authors.forename: R J
authors.initials: RJ
authors.lastname: Schlosser
mesh_terms: D002908:Chronic Disease; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D000071066:Patient Reported Outcome Measures; D015203:Reproducibility of Results; D012220:Rhinitis / Q000175:diagnosis* / Q000601:surgery*; D012852:Sinusitis / Q000175:diagnosis* / Q000601:surgery*; D011795:Surveys and Questionnaires