Statistical analysis
Annual rotavirus season was defined as a 12-month period from August to
July to provide a 2-month period after the June 2015 implementation of
rotavirus vaccine to account for effects of the vaccine program.
Continuous variables were summarized using medians (IQR) and compared
between groups using the Mann-Whitney U test or Kruskal-Wallis test, as
appropriate. We summarized categorical variables using proportions and
compared groups using the Chi-square test of association or Fisher’s
Exact test, as appropriate. Statistical significance was defined by a
two-tailed P -value <0.05. Descriptive statistics were
computed using GraphPad Prism v8. Between group comparisons were
performed using SPSS 25.0 (40).
Results :