Sources of variability in posterior rhinomanometry

David S. James, William E. Lambert, Christine A. Stidley, Thomas W. Chick, Christine M. Mermier, Jonathan M. Samet, David S. James, Thomas W. Chick

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)631-638
Number of pages8
JournalAnnals of Otology, Rhinology & Laryngology
Issue number8
StatePublished - Aug 1993
Externally publishedYes


  • nasal airway resistance
  • rhinomanometry

ASJC Scopus subject areas

  • Otorhinolaryngology


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