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. 2021 May 13;12:643193. doi: 10.3389/fpsyt.2021.643193

Figure 2.

Figure 2

There was a cannabis group-by-sex interaction in self-reported sleep quality, such that females with a history of chronic cannabis use reported more sleep problems than the other groups. We controlled for tobacco usage and total intracranial volume in the analysis. F, Female; M, Male; CAN, Chronic cannabis use group; CTL, control group; PSQI, Pittsburgh Sleep Quality Index.