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Back to the forum  2018-06-22 14:52 CEST (UTC+2h)

Impact of pooled variance (bias, CI) [Design Issues]

posted by Helmut Homepage - Vienna, Austria, 2018-06-13 15:02  - Posting: # 18898
Views: 277

Hi Irene,

» Thank you for your explanation.

You are welcome. A picture tells more than a thousand words (AUC only). ;-)

[image]


The PE and its CI of T/R are similar. The small bias is caused by the fact that the average PE of S/R and T/S (√141.09×83.12=108.29) is close to the T/R with 116.05. The other comparisons show negative biases. The CI of S/R is narrower in the pooled model and the CI of T/S is wider.
We don’t want to go there.

Cheers,
Helmut Schütz
[image]

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