For the perceived-to-beunserious type, the medians of both sentences with low-possibility hedges and sentences with highpossibility hedges went up to 5.
the Bayesian cumulative link mixedeffects model indicated that none of the main effects nor the interaction was observed (possitility, β̂ = -0.18, 95% CrI = [-0.51, 0.14]; perceived severity, β̂ = -4.62, 95% CrI = [-15.06, 7.24]; degree of perceived-severity, β̂ = 1.49, 95% CrI = -4.16, 6.56]; interaction between certainty and perceived severity, β̂ = -0.23, 95% CrI = [-0.89, 0.42]).