The differences in seroepidemiological data among the item numbers of the groups were analysed with a
χ2 test for independence. Calculating the
χ2, a Yate's continuity correction was applied. Fisher's exact test was also performed. The calculations were done using GraphPadInStat V2 (GraphPad Software, V2.05a, USA). We applied the commonly used significance level,
P < 0.05.
In the second part of our mathematical investigation, a factual amount of serum anti-measles IgG level was analysed. Kolmogorov–Smirnov and Shapiro–Wilk tests for normality were performed using STATISTICA Release 6.0 (StatSoft Inc., USA). In each age group, the probability distribution proved to be skew, not corresponding to the normal distribution. Because of failing normality criterion, a Kruskal–Wallis analysis of variance (ANOVA) on ranks with Dunn's post hoc multiple comparisons were used and performed with
SigmaStat 3.0 (SPSS Inc., USA). The significance level of
P < 0.05 has been applied, calculating with two-sided probabilities.
Lengyel G., Marossy A., Ánosi N., Farkas S.L., Kele B., Nemes-Nikodém É., Szentgyörgyi V., Kopcsó I, & Mátyus M. (2018). Screening of more than 2000 Hungarian healthcare workers’ anti-measles antibody level: results and possible population-level consequences. Epidemiology and Infection, 147, e7.