Table 2.

Top 10 features selected according to the recursive feature elimination approach for each gender model.

Rank	Female model	Feature type	Male model	Feature type	Generic model	Feature type
1	First-person singular pronounsa	Grammatical and syntactical elements	First-person singular pronounsa	Grammatical and syntactical elements	First-person singular pronounsa	Grammatical and syntactical elements
2	Proportion of ANb-related tweetsa	Proportion of AN-related tweets (implies the use of AN-related vocabulary)	Proportion of AN-related tweetsa	Proportion of AN-related tweets (implies the use of AN-related vocabulary)	Proportion of AN-related tweetsa	Proportion of AN-related tweets (implies the use of AN-related vocabulary)
3	Work	Personal concerns	Anxiety	Affective processes and emotions	Sadnessa	Affective processes and emotions
4	Feeling	Affective processes and emotions	Sadnessa	Affective processes and emotions	Suicide risk factors: hatea	Suicide risk factors
5	Suicide risk factors: hatea	Suicide risk factors	Suicide risk factors: hatea	Suicide risk factors	Articles	Grammatical and syntactical elements
6	Sadnessa	Affective processes and emotions	Articles	Grammatical and syntactical elements	Biological processes	Biological processes and health
7	Exercise	Anorexia-related vocabulary	Disgust	Affective processes and emotions	Negative emotions	Affective processes and emotions
8	Biological processes	Biological processes and health	Food and meals	Anorexia-related vocabulary	Food and meals	Anorexia-related vocabulary
9	First-person pronouns (plural)	Grammatical and syntactical elements	Past	Grammatical and syntactical elements	Past	Grammatical and syntactical elements
10	Trust	Affective processes and emotions	Third-person pronouns (plural)	Grammatical and syntactical elements	Suicide risk factors: self-loathing	Suicide risk factors

^aFeatures that are relevant for both models.

^bAN: anorexia nervosa.