Presents seven closed-form solutions for sample size calculation based on C-statistic precision in external validation of binary prediction models that match iterative results but execute 148000-264000 times faster.
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A note on closed-form solutions for estimating sample size when externally validating a binary prediction model based on $C$-statistic precision
Presents seven closed-form solutions for sample size calculation based on C-statistic precision in external validation of binary prediction models that match iterative results but execute 148000-264000 times faster.