Comparison of methods for identifying causative bacterial microorganisms in presumed acute endophthalmitis: conventional culture, blood culture, and PCR

Table 3 Analysis of agreement between bacterial culture methods

Methods	Kappa coefficient	95% CI	P-value
CM vs. HC	0.35	–0.03,0.72	0.057
CM vs. PCR	0.08	–0.27,0.42	0.33
HC vs. PCR	0.40	0.10,0.70	0.009

Estimate based on Cohen’s kappa coefficient and the test of the null hypothesis that the extent of agreement is the same as random (kappa = 0). p-value < 0.05 was considered statistically significant
CM, conventional method; HC, hemoculture bottle method; PCR, polymerase chain reaction method

ISSN: 1471-2334