Table 3.

Sleep characteristics following a day on which headache was reported compared with a headache-free day

	Actigraphy	Diaries
Total sleep time (min) β (95%CI)	7.3 (1.5, 13.0)	7.4 (0.9, 13.9)
Sleep efficiency (%) β (95%CI)	−0.1 (−0.3, 0.2)	0.2 (−0.4, 0.7)
WASO (min) β (95%CI)	1.5 (0.0,3.0)	–
Sleep latency (min) β (95%CI)	–	0.2 ( −2.7, 3.2)
Sleep quality OR (95% CI)	–	1.0 (0.8, 1.3)

Mixed-effects linear regression was performed for total sleep time, sleep efficiency, wake after sleep onset (WASO) and sleep latency. A repeated measure logistic regression (Glimmix procedure) was performed for sleep quality such that the Odds Ratio represents the likelihood of reporting poor/very poor sleep quality (vs. fair/good/very good) on days with migraine. All models adjusted for sex, age, daily servings of alcohol and caffeine intake, self-reported physical activity and psychological stress.