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Table 5. Relation between phenotypic expression of methicillin resistance and genotypic mecA gene positivity (n=50).

Presence of mecA gene Methicillin phenotype, n (%) P-value Chi-square value df
Resistant Sensitive
Negative (n=9) 1 (11.1%) 8 (88.9%) <0.001* 43.4 1
Positive (n=41) 41 (100%) 0 (0%)
*

p value <0.05 is considered significant by Chi-Square test. df – degrees of freedom.