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Genotype–phenotype associations of agg PCR results and gelatinase activity with biofilm formation strength.+, positive; −, negative.
| aggA presence | Gelatinase activity | |||||
|---|---|---|---|---|---|---|
| − | + | Total | − | + | Total | |
| Biofilm Strength | ||||||
| No Biofilm | 3 | 0 | 3 | 3 | 0 | 3 |
| Weak | 3 | 6 | 9 | 4 | 5 | 9 |
| Moderate | 1 | 13 | 14 | 8 | 6 | 14 |
| Strong | 0 | 5 | 5 | 1 | 4 | 5 |
| Total | 7 | 24 | 31 | 16 | 15 | 31 |
| Chi-square = 14.25 P = 0.0026: significant association at P < 0.01 | Chi-square = 5.17 P = 0.1598: no significant association | |||||
