Figure 10.

Box plots correlating medians of VOR-gain values at presentation (A–D) and following physical treatment (E–H) for the SC involved by BPPV among overall subjects (53) with identified affected canal divided based on different details. (A,E) Onset time. (B,F) Outcome. (C,G) Number of CRP needed to restore or convert pDBN. (D,H) Time needed for resolution or conversion of pDBN. Statistically significant differences at the Mann-Whitney U-test are reported and highlighted with *p < 0.05. BPPV, benign paroxysmal positional vertigo; CRP, canalith repositioning procedure; pDBN, positional downbeat nystagmus; post, post-treatment; pre, at presentation; SC, semicircular canal; VOR, vestibulo-ocular reflex. Values at a greater distance from the median than 1.5 times and 3 times the IQR are plotted individually as dots (weak outliers) and asterisks (strong outliers), respectively.