PMID- 19379611 OWN - NLM STAT- MEDLINE DCOM- 20090526 LR - 20220311 IS - 1945-8924 (Print) IS - 1945-8932 (Linking) VI - 23 IP - 1 DP - 2009 Jan-Feb TI - Validation of the Sino-Nasal Outcome Test 20 (SNOT-20) domains in nonsurgical patients. PG - 40-5 LID - 10.2500/ajra.2009.23.3259 [doi] AB - BACKGROUND: The objectives of this study were, first, to confirm the presence of multiple domains within the Sino-Nasal Outcome Test 20 (SNOT-20) using a medically treated population, and, second, to reanalyze data from this population to reveal incremental information. A prospective, randomized controlled trial was performed. METHODS: One hundred twenty-seven adults with chronic rhinitis or rhinosinusitis symptoms were treated with nasal saline irrigation or spray. Treatment outcome was quality of life measured with SNOT-20 scores, which were reanalyzed for this study with a factor analysis. Differences in change scores were compared. RESULTS: Factor analysis confirmed the presence of four domains: psychological function, sleep function, rhinological symptoms, and ear and/or facial symptoms. At 8 weeks after randomization, saline irrigation had significant effects on the rhinological symptom (p = 0.01) and sleep (p = 0.01) compared with saline spray, but no between-group difference was seen in psychological function or ear and/or facial symptom domains. CONCLUSION: Subscales identified differences in the impact of two medical interventions on chronic sinonasal symptoms. Reporting subscale scores might improve the precision of the SNOT-20 instrument, allowing discrimination between various treatments and their differential impact on sinonasal quality of life. FAU - Pynnonen, Melissa A AU - Pynnonen MA AD - Department of Otolaryngology, University of Michigan Health System, Ann Arbor, Michigan, USA. pynnonen@umich.edu FAU - Kim, H Myra AU - Kim HM FAU - Terrell, Jeffrey E AU - Terrell JE LA - eng PT - Comparative Study PT - Journal Article PT - Randomized Controlled Trial PL - United States TA - Am J Rhinol Allergy JT - American journal of rhinology & allergy JID - 101490775 RN - 451W47IQ8X (Sodium Chloride) SB - IM MH - Administration, Intranasal MH - Female MH - Follow-Up Studies MH - Humans MH - Male MH - Middle Aged MH - Nasal Lavage/*methods MH - Prospective Studies MH - Quality of Life MH - Reproducibility of Results MH - Rhinitis/complications/diagnosis/*drug therapy MH - Severity of Illness Index MH - Sinusitis/complications/diagnosis/*drug therapy MH - Sodium Chloride/*administration & dosage MH - Treatment Outcome EDAT- 2009/04/22 09:00 MHDA- 2009/05/27 09:00 CRDT- 2009/04/22 09:00 PHST- 2009/04/22 09:00 [entrez] PHST- 2009/04/22 09:00 [pubmed] PHST- 2009/05/27 09:00 [medline] AID - 10.2500/ajra.2009.23.3259 [doi] PST - ppublish SO - Am J Rhinol Allergy. 2009 Jan-Feb;23(1):40-5. doi: 10.2500/ajra.2009.23.3259.