1. Sources of Variability in Posterior Rhinomanometry
- Author
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William E. Lambert, Jonathan M. Samet, Thomas W. Chick, Christine A. Stidley, Christine M. Mermier, and David S. James
- Subjects
Adult ,Male ,Time Factors ,Manometry ,Nasal airway ,03 medical and health sciences ,0302 clinical medicine ,medicine ,Humans ,030223 otorhinolaryngology ,Nose ,Analysis of Variance ,medicine.diagnostic_test ,business.industry ,Airway Resistance ,Individual difference ,Reproducibility of Results ,General Medicine ,respiratory system ,medicine.disease ,Total variability ,Respiratory Function Tests ,Upper respiratory tract infection ,medicine.anatomical_structure ,Otorhinolaryngology ,030220 oncology & carcinogenesis ,Anesthesia ,Female ,Nasal Obstruction ,Rhinomanometry ,business ,Airway ,Nasal symptoms - Abstract
Sources of variability in nasal airway resistance measured by posterior rhinomanometry were studied in 5 subjects tested on 5 different days and 56 subjects tested on 2 different days. On each day, a questionnaire on upper airway health and nasal symptoms was completed. The mean individual difference in nasal airway resistance between the 2 test days in the group of 56 subjects was 5.3% (SD 52.7%). Between-subject variability accounted for 74.9% and 72.5% of the total variability in the group of 5 and the group of 56 subjects, respectively. For the 5 subjects, by accounting for a change in upper airway symptoms or upper respiratory tract infection that occurred over the 5 test days, there was a significant decrease in the between-subject variability. The difference in sources of variation due to a change in upper airway symptoms was not seen in the group of 56 subjects. We conclude that the largest source of variability in nasal airway resistance is due to between-subject differences.
- Published
- 1993