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. Author manuscript; available in PMC: 2021 Dec 1.
Published in final edited form as: Sleep Health. 2020 May 22;6(6):804–813. doi: 10.1016/j.sleh.2020.04.003

Table 3.

Model parameter estimates for PSQI global score

95% Confidence Interval
PSQI Global SCORE Coefficient Std. Err. Z-value P>|Z| Lower Upper
Intercept 2.107 0.258 8.16 0.000 1.600 2.613
PSQI Baseline (covariate) 0.684 0.027 24.69 0.000 0.630 0.739
TREATMENT
Control Group (reference)
Meditation Group −0.528 0.291 −1.82 0.070 −1.099 0.042
Exercise Group −0.984 0.292 −3.37 0.001 −1.557 −0.411
TIME
Post-Intervention time 1 November (reference)
Post-Intervention time 2 January −0.212 0.209 −1.01 0.311 −0.624 0.198
Post-intervention time 3 March −0.338 0.208 −1.62 0.105 −0.748 0.070
Post-intervention time 4 May −0.140 0.207 −0.68 0.499 −0.548 0.266
INTERACTION
Meditation group X Time 2 −0.196 0.303 −0.65 0.518 −0.790 0.398
Meditation group X Time 3 0.045 0.299 0.15 0.879 −0.540 0.631
Meditation group X Time 4 −0.247 0.297 −0.83 0.405 −0.831 0.335
Exercise group X Time 2 0.252 0.301 0.84 0.401 −0.337 0.843
Exercise group X Time 3 0.404 0.298 1.36 0.175 −0.180 0.988
Exercise group X Time 4 0.147 0.297 0.50 0.619 −0.434 0.730

Correlated random effects linear models for cross-sectional time-series data