Fig 1.
PRISMA Flowchart summarising study retrieval and selection.
Fig 2.
Waffle chart highlighting the proportion of demographic attributes comprising our dataset.
Fig 3.
Number of articles published per year and by quality of publication.
Table 1.
Number of articles predicting gender, with associated platforms and references.
Table 2.
Number of articles predicting gender, with associated predictors and references.
Table 3.
Number of articles predicting age, with associated platforms and references.
Table 4.
Number of articles predicting age, with associated predictors and references.
Table 5.
Number of articles predicting location, with associated platforms and references.
Table 6.
Number of articles predicting location, with associated predictors and references.
Table 7.
Number of articles predicting political orientation, with associated platforms and references.
Table 8.
Number of articles predicting political orientation, with associated predictors and references.
Table 9.
Number of articles predicting sexual orientation, with associated platforms and references.
Table 10.
Number of articles predicting sexual orientation, with associated predictors and references.
Table 11.
Number of articles predicting family and relationship status, with associated platforms and references.
Table 12.
Number of articles predicting family and relationship status, with associated predictors and references.
Table 13.
Number of articles predicting ethnicity or race, with associated platforms and references.
Table 14.
Number of articles predicting ethnicity or race, with associated predictors and references.
Table 15.
Number of articles predicting education level, with associated platforms and references.
Table 16.
Number of articles predicting education level, with associated predictors and references.
Table 17.
Number of articles predicting income, with associated platforms and references.
Table 18.
Number of articles predicting income, with associated predictors and references.
Table 19.
Number of articles predicting language, with associated platforms and references.
Table 20.
Number of articles predicting language, with associated predictors and references.
Table 21.
Number of articles predicting religion, with associated platforms and references.
Table 22.
Number of articles predicting religion, with associated predictors and references.
Table 23.
Number of articles predicting occupation, with associated platforms and references.
Table 24.
Number of articles predicting occupation, with associated predictors and references.
Table 25.
Number of articles predicting health, with associated predictors and references.
Table 26.
Number of articles predicting health, with associated predictors and references.
Table 27.
Number of articles predicting social class, with associated platforms and references.
Table 28.
Number of articles predicting social class, with associated predictors and references.