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| budget | Optimal sampling design for 2-stage studies with fixed budget |
| cass1 | The CASS pilot dataset with sex as auxiliary covariate |
| cass2 | The CASS pilot dataset with sex and categorical weight as auxiliary variables |
| coding | combines two or more surrogate/auxiliary variables into a vector |
| fixed.n | Optimal second stage sampling fractions, subject to fixed sample sizes at the first and second stage |
| ms.nprev | Logistic regression of two-stage data using second stage sample and first stage sample sizes or proportions (prevalences) as input |
| precision | Optimal sampling design for 2-stage studies with fixed precision |