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| Novel data streams | Study period | Details | Range |
|---|---|---|---|
| Wikipedia | 2004–2017 | Number of edits performed | Unbounded |
| Wikipedia | 2015–2017 | Number of pageviews | Unbounded |
| 2006–2017 | Number of tweets produced | Unbounded | |
| Google Trends | 2004–2017 | Search volumes carried out | 0–100 |
| PubMed/MEDLINE | 2004–2017 | Number of articles written | Unbounded |
| Google News | 2008–2017 | Volumes of news consumed | 0–100 |
