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. 2019 May 16;8(3):167–176. doi: 10.1007/s40037-019-0511-8

Table 4.

Decision study with post-PRIME data (reliability across different levels)

Subscales Items Total items σ2 (τ) σ2 (δ) σ2 (∆) Absolute error φ Relative error Ep2
Original scale 30 0.575 0.124 0.376 0.605 0.822
3  5 15 0.575 0.139 0.392 0.595 0.805
3 20 60 0.575 0.118 0.368 0.609 0.830
1  5  5 0.575 0.408 1.152 0.333 0.585
1 10 10 0.575 0.367 1.106 0.342 0.610

σ2 variance component, τ error term, δ signal term, ∆ interactions and main effects