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Table 2 Estimates of mean exposure values, variance components and autocorrelation parameters in the parent data set

From: Accuracy and precision of variance components in occupational posture recordings: a simulation study of different data collection strategies

Parameter

Average elevation

%time >90°

%time <15°

μ

29.2°

4.7

32.5

σ 2 BS

22.2 (°)2

3.0

152.8

σ 2 BD

9.2 (°)2

4.0

65.6

σ 2 WD

234.9 (°)2

164.7

616.1

ρ(1)

0.55

0.52

0.51

ρ(2)

0.37

0.34

0.33

ρ(3)

0.29

0.26

0.26

ρ(4)

0.23

0.22

0.22

ρ(5)

0.19

0.17

0.18

ρ(10)

0.09

0.08

0.09

  1. μ, mean value; σ 2 BS, σ 2 BD , σ 2 WD, variances between subjects, between days and within days; ρ(h), sample autocorrelation at lag h.