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Monitoring Interest in Herpes Zoster Vaccination: Analysis of Google Search Data

Monitoring Interest in Herpes Zoster Vaccination: Analysis of Google Search Data

We assessed periodicity in searches using the weekly or monthly relative intensity of the search data queried between January 1, 2011 and December 31, 2016. Significance of periodicity was tested using Fisher’s g test [34]. To compare seasonal timing between different search terms, we fit trigonometric regression models. We used the equation: and used time series bootstrap [35] to test the null hypothesis that the difference in the phase angle arctan for the annual terms was zero.

Elyse J Jordan Berlinberg, Michael S Deiner, Travis C Porco, Nisha R Acharya

JMIR Public Health Surveill 2018;4(2):e10180