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Table 2 Parameter estimates (intercepts and slopes) of daytime average activity (DAA) scores depicting the PA course within the pre-offshore, offshore, and post-offshore period, 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

Intercept

137.8 (34.4)

0.00

 Pre-offshore

ref

 

 Offshore

5.6 (25.2)

0.82

 Post-offshore

−12.1 (11.3)

0.29

Slope (Time in days)

−0.8 (1.6)

0.61

 Pre-offshore

ref

 

 Offshore

0.2 (1.8)

0.91

 Post-offshore

0.8 (1.6)

0.60

Random effects

 Intercept variance

723.8 (174.0)

 

 Slope variance

0.7 (0.5)

 

 Intercept–slope covariance

−8.3 (9.0)

0.30

Residual variance

975.5 (126.5)