Seasonality of benign paroxysmal positional vertigo : A retrospective study from Central Europe.

The correlation of the mean daylight hours/day of the particular months with BPPV occurrence showed a negative trend (ρ = −0.17, p = 0.078), when correlating with daylight hours of the preceding month (e.g., daylight hours in January correlated with BPPV cases in February) the negative correlation reached significance (ρ = −0.21, p = 0.042) with significantly more BPPV cases during darker months.

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