Fig. 8: Conclusions are robust across mobility data sources.
a R2 obtained using SafeGraph’s completely at home metric in place of the first principle component of Google’s mobility trends dataset. Median (solid lines) and 95% quantiles (shaded) are shown. b Rolling median 3-month correlation between SafeGraph’s completely at home mobility metric and each of the six Google mobility indicators. From March–June, absolute correlations were high, indicating consistency between all measures of mobility. However, the strong relationship decayed through May–October suggesting person-to-person contact patterns may not be well captured through coarse cell phone mobility after the initial period.
