Table 2:

Adjusted analyses assessing effects of group and time on sleep and psychosocial factors in episodic migraine patients

Variable	Mean Difference (95% Confidence Interval)	p valuea
Sleep Quality (PSQI) b
Group effect
MBSR+ vs. SMH	−0.42 (−1.39, 0.55)	0.39
Time effect
Δ 10 weeks	−0.13 (−0.70, 0.45)	0.66
Δ 20 weeks	−0.67 (−1.10, −0.24)	0.0025
Anxiety (GAD-7) c
Group Effect
MBSR+ vs. SMH	−0.13 (−0.71, 0.46)	0.67
Time Effect
Δ 10 weeks	−0.20 (−0.66, 0.25)	0.38
Δ 20 weeks	0.14 (−0.26, 0.55)	0.48
Depression (PHQ-9) d
Random effects variance parameter
Intercept	2.62 (1.85, 3.98)
Residual	2.23 (1.83, 2.78)
Group Effect
MBSR+ vs. SMH	−0.14 (−0.88, 0.61)	0.72
Time Effect
Δ 10 weeks	0.35 (−0.09, 0.80)	0.12
Δ 20 weeks	−0.11 (−0.57, 0.35)	0.64
Stress (PSS) e
Group Effect
MBSR+ vs. SMH	−0.93 (−2.49, 0.62)	0.24
Time Effect
Δ 10 weeks	0.09 (−0.84, 1.03)	0.85
Δ 20 weeks	−0.49 (−1.65, 0.67)	0.40

Abbreviations: PSS: perceived stress score, GAD-7: generalized anxiety disorder, PHQ-9: patient healthy questionnaire, PSQI: Pittsburgh sleep quality index

^ap value from linear mixed model

^bModel adjusted for stress, BMI and headache pain

^cModel adjusted for stress and depression.

^dModel adjusted for anxiety, headache impact score and additional idiopathic pain condition. Model includes random intercept.

^eModel adjusted for depression, anxiety, sleep and headache days