Table 2 Tweet variables related to the interaction and the structure of messages.

Interaction

 Mention_count^a

Numeric

Number of mentions included in the text of the tweet

 Hashtag_count^a

Numeric

Number of hashtags included in the text of the tweet

 Url^a

Boolean

When true, indicates that the tweet includes a URL

 Retweet_count

Numeric

Number of times this tweet has been retweeted

 Minute_count

Numeric

Number of minutes since the event happened and the tweet was issued

Structure

 Text_count^a

Numeric

Number of characters in the message, excluding URL, emoji, and retweet structure characters (i.e., ‘RT @username’)

 Emoji^a

Boolean

Indicates whether the text of the tweet includes an emoji