Table I.

Age at diagnosis, last episode duration since the onset of symptomatology, overall number of crisis and vertigo intensity in relation to the clinical manifestations occurred performing SM due to posterior BPPV. Differences not significant by ANOVA test (p > 0.05).

	Age (a)	Last episode duration (b)	Overall number of crisis	Vertigo intensity (c)
No clinical manifestations (n = 21)	61 ± 14	45 ± 48	2.7 ± 2.8	4.8 ± 2.1
Both orthotropic Ny and vertigo in the second SM position (n = 75)	63 ± 11	43 ± 59	2.1 ± 2.1	5.1 ± 1.3
Vertigo returning to sitting position (n = 17)	62 ± 11	29 ± 27	1.9 ± 2.2	5.1 ± 1.7
p	> 0.05	> 0.05	> 0.05	> 0.05

a: age is expressed in years; b: last episode duration is expressed in days; c: vertigo intensity values are expressed out of 10 at the visual-analogue-scale.