Statistics:
Dichotomous data were tested by a chi-squared test. A two-sided significance level of p = 0.05 was used for determining statistical significance. The Pearson correlation coefficient was used to analyze correlation of titers between CLIA and ELNA (Microsoft® Excel®, Microsoft 395 MSO, Windows 2010). To determine the predominant titers in a group of patients, the median was calculated (Microsoft® Excel®, Microsoft 395 MSO, Windows 2010).
RESULTS