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Table 2 Results of mixed-effects REML regression for the calibration factor CF rA

From: Factors affecting the stability and repeatability of gamma camera calibration for quantitative imaging applications based on a retrospective review of clinical data

 

Estimate

95% Confidence interval

Fixed effects

μ C F r A

0.0714

−0.1213 to 0.2641

β S E F

0.0482

−0.1392 to 0.2355

βConstancy

−0.2200

−0.4061 to −0.0339

Random effects (weight of the parameter on the total variance)

σ C F r A 2

9.14 × 10−20 (0.0%)

 

σ γ B k R 2

0.026 (3.3%)

 

σ ε 2

0.760 (96.7%)

 
  1. Note that the values above were obtained using standardized variables, i.e., where the mean of each variable in the model was subtracted and the result was divided by the standard deviation of that variable. Thus, the values above are scaleless.