**Data Input for Sample Size Estimation** is a table of 3 columns

- Each row contains data from a separate study
- Col 1 = Confidence interval in percent of observations
- Col 2 = Tolerable error in distance from mean value
- Col 3 = Expected Standard Deviation of the population being sampled

**Data Input for Error Estimation** is a table of 3 columns

- Each row contains data from a separate study
- Col 1 = Confidence Interval in percent of observations
- Col 2 = Sample size
- Col 3 = Standard Deviation found in sample

**Data Input for Pilot Study** is for a single plan, a single column with 3 rows

- Row 1 : Percent Confidence required, usually 95 or 99
- Row 2 : Sample Size Interval
- Row 3 : Maximum sample size

Machin D, Campbell M, Fayers, P, Pinol A (1997) Sample Size Tables for
Clinical Studies. Second Ed. Blackwell Science IBSN 0-86542-870-0 p. 131-135