nominally significantP < 0.05
Differences between groups were nominally significant (nominal P < 0.05) if the 95% confidence interval [CI] of the group difference did not include the null value (0 for mean differences and 1 for odds ratios), but for the sake of convenience, if the nominal P ‐value in the secondary analysis is less than 0.05, it is described as significant, and if it is 0.05 or more, it is described as non‐significant.