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. 2017 Jul 18;7:5733. doi: 10.1038/s41598-017-05901-0

Table 5.

Genotype–phenotype associations of gelA, fsrAB, and fsrB with gelatinase activity with biofilm formation strength + , positive; −, negative; A: positive for fsrA only; A&B: positive for both fsrA and fsrB.

fsrAB fsrB only gelE
A A & B Total + Total + Total
Gelatinase Activity
10 3 3 16 10 6 16 4 12 16
+ 1 3 11 15 1 14 15 0 15 15
Total 11 6 14 31 11 20 31 4 27 31
Chi-square = 11.92 P = 0.0026 Significant at P < 0.01 Chi-square = 10.54 P = 0.0012 Significant at P < 0.01 Fisher’s Exact Test* = 0.002 (Significant) Chi-square = 4.306 P = 0.038 Significant at P < 0.05 but not at P < 0.01 Fisher’s Exact Test* = 0.101 (Non-significant)

*Fisher Exact Test applies only to 2 × 2 tables.