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Table 3 Parameter estimates of the parallel longitudinal model of daytime average activity (DAA) and association with next morning sleepiness (KSS) trends, adjusted for age and platform location (N = 36)

From: The courses of objective physical activity and the association with sleepiness during a 2-week-on/2-week-off offshore shift rotation: an observational repeated-measures study

 

Estimate (SE)

p-value

Fixed effects

DAA

 Intercept

16.9 (4.7)

0.00

 Slope

−0.18 (0.17)

0.32

KSS

 Intercept

3.66 (0.22)

0.00

 Slope

0.01 (0.01)

0.14

 DAA

0.001 (0.001)

0.15

 NAA

−0.002 (0.003)

0.43

Random effects

DAA

 Intercept DAA variance

598.9 (134.1)

 

 Slope DAA variance

0.27 (0.26)

 

 Intercept–slope DAA covariance

−0.38 (5.2)

0.94

KSS

 Intercept KSS variance

1.51 (0.43)

 

 Slope KSS variance

0.001 (0.000)

 

 Intercept–slope KSS covariance

−0.01 (0.01)

0.31

DAA-KSS

 Covariance intercept DAA–slope KSS

−0.10 (0.18)

0.56

 Covariance intercept KSS–slope DAA

0.40 (0.23)

0.08

 Covariance intercept DAA–intercept KSS

0.11 (7.2)

0.99

 Covariance slope DAA–slope KSS

−0.001 (0.007)

0.89

Residual KSS variance

1.1 (0.15)

 

Residual DAA variance

932.3 (125.6)