Analysis of (dis)agreement among aggregators in Twitter counts (re)tweets, and distinct tweeters.

The data collection and reporting approaches of four major altmetric data aggregators are studied. The main aim of this study is to understand how differences in social media...

Analysis of (dis)agreement among aggregators in Mendeley readership counts.

Analysis of (dis)agreement among aggregators in Wikipedia counts.

Pearson correlation analysis across different aggregators and their Wikipedia counts.

Pearson correlation analysis across different aggregators and their Facebook counts.

Analysis of (dis)agreement among aggregators in Facebook counts.

Pearson correlation analysis across different aggregators and their tweets and retweets.

Coverage (% of DOIs with at least one metric) of PloS ONE DOIs across altmetric aggregators and aggregators and per data sources.