"Coverage Error in Data Collection Combining Mobile Surveys With Passive Measurement Using Apps: Data From a German National Survey" by @floriankeusch and colleagues. Exluding devices/OS can lead to coverage error. Important for new data collection appr.
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👏Congrats to @floriankeusch, @fraukolos Georg-Christoph Haas and of course all other non-twitter authors to this highly relevant work, during #COVID2019 and beyond! 👏