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Figure 2 | BMC Medical Research Methodology

Figure 2

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

Figure 2

Estimated variance component mean values (error bars: 90% prediction intervals) resulting from simulations of six different sampling strategies assessing percentage time above 90°. All six strategies used random sampling from n s  = 10 subjects, approached for n d  = 2 days each. Green circles, blue squares and red triangles show within-day, between-days and between-subjects variance, respectively. Unfilled and filled symbols show strategies with t tot  = 120 minutes and t tot  = 240 minutes, respectively. Red dashed, blue solid and green dotted lines represent the “true” within-day, between-days and between-subjects variance, respectively, according to the parent data set

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