Table 7. Comparison between Congo red agar test and PCR test results for icaA and icaD gene.
Congo red agar, n (%) | Total | P-value | Chi-square value | df | ||
---|---|---|---|---|---|---|
Positive N=26 | Negative N=24 | |||||
icaA | ||||||
Positive | 19 (73.1%) | 10 (41.7%) | 29 (58.0%) | 0.025* | 5.1 | 1 |
Negative | 7 (26.9%) | 14 (58.3%) | 21 (42.0%) | |||
icaD | ||||||
Positive | 13 (50.0%) | 17 (70.8%) | 20 (40.0%) | 0.133 | 2.3 | 1 |
Negative | 13 (50.0%) | 7 (29.2%) | 30 (60.0%) |