Racial differences in nasal fossa dimensions determined by acoustic rhinometry

N. J. Morgan, F. B. MacGregor, M. A. Birchall, V. J. Lund, Y. Sittampalam

Research output: Contribution to journalArticle

57 Citations (Scopus)

Abstract

Sixty acoustic rhinographs from subjects of three different ethnic groups (Caucasian [Europeans], Negro, and Oriental) were examined at baseline and after decongestion. The main parameters analysed were minimal cross-sectional area (MCA), the distance at which this occurred (D), nasal volume at 0-4 cm (Vol), mean cross-sectional area at 0-6 cm (MA), and the cross-sectional area at 10 points in the nose (0, 0.5, 1, 1.5, 2, 2.5, 3, 4, 5, and 6 cm) analysed as a series (A). Values from left and right were combined and mean values used. Analysis was carried out using multiple linear regression and grouped linear regression with analysis of covariance and, for A, multifactorial analysis of variance. For MCA, race was the main determining factor with Orientals and Caucasians significantly lower than Negroes: p<0.0001 (corrected means and 95% confidence intervals [c.i.]: Orientals: 0.63 cm2, 0.55-0.71 cm2; Caucasians: 0.69 cm2, 0.62-0.77 cm2; Negroes: 0.87 cm2, 0.79-0.95 cm2). Height alone correlated with D in the decongested state (p<0.0001); race as well as height in non-decongested noses (p=0.018). There were significant racial differences in Vol in both decongested (p=0.014), and non decongested noses (p<0.0001). In the non-decongested state MA was significantly different in all racial groups: p<0.0001 (corrected means and c.i.: Orientals: 3.89 cm2, 3.47-4.31 cm2; Caucasians: 4.67 cm2, 4.27-5.09 cm2; Negroes: 5.13 cm2, 4.72-5.53 cm2). In the decongested state there was a significant difference between Negroes and the other two groups (p=0.015) and Orientals and Caucasians were a homogenous population. We conclude that race has a significant effect on acoustic rhinometry measurements and this needs to be taken into account.

Original languageEnglish (US)
Pages (from-to)224-228
Number of pages5
JournalRhinology
Volume33
Issue number4
StatePublished - 1995
Externally publishedYes

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Acoustic Rhinometry
Nose
Linear Models
Confidence Intervals
Ethnic Groups
Acoustics
Analysis of Variance
Regression Analysis
xylometazoline
Population

Keywords

  • Acoustic rhinometry
  • Nasal index
  • Race

ASJC Scopus subject areas

  • Otorhinolaryngology

Cite this

Morgan, N. J., MacGregor, F. B., Birchall, M. A., Lund, V. J., & Sittampalam, Y. (1995). Racial differences in nasal fossa dimensions determined by acoustic rhinometry. Rhinology, 33(4), 224-228.

Racial differences in nasal fossa dimensions determined by acoustic rhinometry. / Morgan, N. J.; MacGregor, F. B.; Birchall, M. A.; Lund, V. J.; Sittampalam, Y.

In: Rhinology, Vol. 33, No. 4, 1995, p. 224-228.

Research output: Contribution to journalArticle

Morgan, NJ, MacGregor, FB, Birchall, MA, Lund, VJ & Sittampalam, Y 1995, 'Racial differences in nasal fossa dimensions determined by acoustic rhinometry', Rhinology, vol. 33, no. 4, pp. 224-228.
Morgan NJ, MacGregor FB, Birchall MA, Lund VJ, Sittampalam Y. Racial differences in nasal fossa dimensions determined by acoustic rhinometry. Rhinology. 1995;33(4):224-228.
Morgan, N. J. ; MacGregor, F. B. ; Birchall, M. A. ; Lund, V. J. ; Sittampalam, Y. / Racial differences in nasal fossa dimensions determined by acoustic rhinometry. In: Rhinology. 1995 ; Vol. 33, No. 4. pp. 224-228.
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abstract = "Sixty acoustic rhinographs from subjects of three different ethnic groups (Caucasian [Europeans], Negro, and Oriental) were examined at baseline and after decongestion. The main parameters analysed were minimal cross-sectional area (MCA), the distance at which this occurred (D), nasal volume at 0-4 cm (Vol), mean cross-sectional area at 0-6 cm (MA), and the cross-sectional area at 10 points in the nose (0, 0.5, 1, 1.5, 2, 2.5, 3, 4, 5, and 6 cm) analysed as a series (A). Values from left and right were combined and mean values used. Analysis was carried out using multiple linear regression and grouped linear regression with analysis of covariance and, for A, multifactorial analysis of variance. For MCA, race was the main determining factor with Orientals and Caucasians significantly lower than Negroes: p<0.0001 (corrected means and 95{\%} confidence intervals [c.i.]: Orientals: 0.63 cm2, 0.55-0.71 cm2; Caucasians: 0.69 cm2, 0.62-0.77 cm2; Negroes: 0.87 cm2, 0.79-0.95 cm2). Height alone correlated with D in the decongested state (p<0.0001); race as well as height in non-decongested noses (p=0.018). There were significant racial differences in Vol in both decongested (p=0.014), and non decongested noses (p<0.0001). In the non-decongested state MA was significantly different in all racial groups: p<0.0001 (corrected means and c.i.: Orientals: 3.89 cm2, 3.47-4.31 cm2; Caucasians: 4.67 cm2, 4.27-5.09 cm2; Negroes: 5.13 cm2, 4.72-5.53 cm2). In the decongested state there was a significant difference between Negroes and the other two groups (p=0.015) and Orientals and Caucasians were a homogenous population. We conclude that race has a significant effect on acoustic rhinometry measurements and this needs to be taken into account.",
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N2 - Sixty acoustic rhinographs from subjects of three different ethnic groups (Caucasian [Europeans], Negro, and Oriental) were examined at baseline and after decongestion. The main parameters analysed were minimal cross-sectional area (MCA), the distance at which this occurred (D), nasal volume at 0-4 cm (Vol), mean cross-sectional area at 0-6 cm (MA), and the cross-sectional area at 10 points in the nose (0, 0.5, 1, 1.5, 2, 2.5, 3, 4, 5, and 6 cm) analysed as a series (A). Values from left and right were combined and mean values used. Analysis was carried out using multiple linear regression and grouped linear regression with analysis of covariance and, for A, multifactorial analysis of variance. For MCA, race was the main determining factor with Orientals and Caucasians significantly lower than Negroes: p<0.0001 (corrected means and 95% confidence intervals [c.i.]: Orientals: 0.63 cm2, 0.55-0.71 cm2; Caucasians: 0.69 cm2, 0.62-0.77 cm2; Negroes: 0.87 cm2, 0.79-0.95 cm2). Height alone correlated with D in the decongested state (p<0.0001); race as well as height in non-decongested noses (p=0.018). There were significant racial differences in Vol in both decongested (p=0.014), and non decongested noses (p<0.0001). In the non-decongested state MA was significantly different in all racial groups: p<0.0001 (corrected means and c.i.: Orientals: 3.89 cm2, 3.47-4.31 cm2; Caucasians: 4.67 cm2, 4.27-5.09 cm2; Negroes: 5.13 cm2, 4.72-5.53 cm2). In the decongested state there was a significant difference between Negroes and the other two groups (p=0.015) and Orientals and Caucasians were a homogenous population. We conclude that race has a significant effect on acoustic rhinometry measurements and this needs to be taken into account.

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