Divergent patterns of engagement with partisan and low-quality news across seven social media platforms.

Thus, there is a highly significant overall negative relationship between news domain quality and engagement (b = −0.011, SE = 0.002, t = −4.712, P < 0.001 without controlling for political lean; b = −0.013, SE = 0.003, t = −4.373, P < 0.001 controlling for political lean); and heterogeneity across platforms is not statistically significant (test for heterogeneity: Q(6) = 12.922, P = 0.044 without controlling for quality; Q(6) = 9.828, P = 0.132 controlling for quality—to the extent that heterogeneity exists, it is quantitative rather than qualitative).

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