Table 4A.
Formula used for sample size calculation for pilot study.
n = (Z1-α/2 + Z1-β)2 {1 + (n - 1)ρ}/(nΔ2), where n = 7, ρ = 0.2, Δ =  , β = 0.1. |
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.