<qa>  What was the density distribution plot of the age distribution differences of patients treated surgically and non-The age distribution differences of patients with C2-fractures treated surgically and non-surgically was visualised with a density distribution plot. A logit logistic regression analysis identified covariates of surgical treatment assignment and was presented with 95 confidence intervals C.I. and statistical probability p. Goodness-of-fit of the model was presented with pseudo-r2 according to McFadden. 