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Statistical analysis of Pseudomonas aeruginosa adhesion to human buccal epithelial cells

par Cerf, Anne ;Dehaye, Jean-Paul ;Devleeschouwer, Michel
Référence Colloids and surfaces. B, Biointerfaces, 9, 5, page (247-255)
Publication Publié, 1997-08

Article révisé par les pairs

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Résumé :

This paper describes a statistical analysis of the adhesion of Pseudomonas aeruginosa ATCC 15442 to human buccal epithelial cells (BECs). This analysis was designed to test the assumptions underlying the use of another statistical test, namely the sstatistical test, which is currently used in adhesion studies to compare two possible models describing the adhesion process. These assumptions are that the adhesion variable follows a Gaussian distribution with constant variance at all bacteria-to-BECs ratios. We used the Kolmogorov-Smirnov and the variance ratio tests respectively to test the normality and the variance equality of the variable 'adhesion of P. aeruginosa ATCC 15442 to BECs'. It was concluded that this variable is normally distributed and that its variance is constant whatever the bacteria-to-BECs ratio. The statistical analysis presented in this paper may be extended to any other system of bacteria and cells, any time the normality and the variance equality of the adhesion have to be tested.