Table 1.

Comparison of mobility studies based on OSN. The number in brackets in the Location column indicates the number of entities under study. Acronyms: MPL: mobile-phone location data; PTD: Public Transport data

Ref.	Goal	Datasources	Granularity level	Location Setting	Validation method	COVID-19 related
[5]	Predict the spread of SARS-CoV-2 through the analysis of geolocated tweets	TWT	Inter-countries	Worldwide	none	yes
[4]	Prediction of the spatiotemporal spread of infectious diseases using social media data	TWT	Inter-city	China	none	yes
[6]	Early epidemic predictions	PTD	Intra-city	Fortaleza (Brazil)	OD and time series comparison	no
[29]	Estimation of commuting trip distribution	TWT & census tracts	Intra-city	New York	none	no
[1]	Detection of population’s spatio-temporal and demographic features	TWT	Intra-city	Chicago	Census and activity centers data	no
[25]	Natural disaster detection	TWT	Inter-cities	N/A	none	no
[30]	Spatial distribution of the worldwide population	TWT	Inter-countries	Worldwide	Statistical methods	no
[20]	Human mobility study	TWT & travel surveys	Intra-city	New York	Statistical methods	no
[19]	Human mobility study	TWT & MPL	Nation-wide	Australia	Statistical methods	no
[17]	Human mobility study	TWT & MPL	Nation-wide	USA	Statistical methods	yes
[15]	Human mobility study	TWT & demographics	Worldwide	-	Statistical methods	no
[31]	Use of telephone antenna signals to establish human relationships between geographic areas	MLP	Inter-cities	Chile	Graph Clustering	no
Our approach	Human mobility study	TWT & MPL	Nation-wide	Spain	OD and time series comparison	yes