Physical Activity and Sleep in Chronic Fatigue Syndrome and Fibromyalgia Syndrome: Associations with Symptom Severity in the General Population Cohort LifeLines
Table 2
Associations between physical activity, sleep duration, and symptom severity.
CFS
FMS
Controls
B
95% CI
B
95% CI
B
95% CI
Linear
(1) Physical total activity score
−0.007
−0.047, 0.032
−0.009
−0.031, 0.012
−0.007
−0.009, −0.004
(2) Sleep duration
−0.005
−0.045, 0.036
−0.009
−0.036, 0.017
−0.004
−0.008, −0.001
Quadratic
(3) Physical total activity score (linear term)
−0.042
−0.091, 0.008
−0.046
−0.073, −0.020
−0.009
−0.012, −0.006
Physical total activity score (quadratic term)
0.020
0.003, 0.038
0.019
0.011, 0.027
0.001
0.001, 0.002
(4) Sleep duration (linear term)
−0.045
−0.089, 0.00
−0.021
−0.047, 0.005
−0.007
−0.011, −0.003
Sleep duration (quadratic term)
0.017
0.008, 0.025
0.040
0.031, 0.049
0.00
0.00, 0.00
CFS = chronic fatigue syndrome; FMS = fibromyalgia syndrome. . Multivariable regression analyses were done, adjusted for age, sex, BMI, smoking, and education.