PRECISION Subcommand (POWER PROPORTIONS RELATED command)

The optional PRECISION subcommand estimates the sample size based on confidence intervals. The subcommand takes effect when POWER is specified and TEST = NONDIRECTIONAL. The keyword is ignored otherwise.

HALFWIDTH = values

The optional keyword specifies the values of the confidence interval half-widths. At least one value must be specified. When multiple values are specified, they are separated by a blank space (or blank spaces). All valid values must be greater than 0 and less than or equal to 1. Duplicate values are ignored.

CITYPES

The required keyword specifies the confidence interval type and whether the continuity correction is applied. At least one of the following keywords must be specified.

WALD

Uses the Wald confidence interval.

WALDCC

Uses the Wald confidence interval with the continuity correction.

AGRESTI_MIN

Uses the Agresti-min confidence interval.

BONETT_PRICE

Uses the Bonett-Price confidence interval.