Table 2.

Separation of encouragement within pairs based on 1000 simulations

	$\left({\overline{Z}}_{\text{U}},{\overline{Z}}_{\text{E}}\right)$	St diff
IVM	(37 %, 62 %)	141
WIVM	(35 %, 65 %)	175
NFM	(30 %, 70 %)	232

Reported is the mean treatment usage at unencouraging facilities ${\overline{Z}}_{\text{U}}$, encouraging facilities ${\overline{Z}}_{\text{E}}$, and the standardized difference between them, calculated as $\text{St Diff}=100\left({\overline{Z}}_{\text{E}}-{\overline{Z}}_{\text{U}}\right)/\sqrt{.5\left(s_{Z_{\text{E}}}^2+s_{Z_{\text{U}}}^2\right)}$ where $s_{Z_{\text{E}}}^2$ and $s_{Z_{\text{U}}}^2$ are sample variances of the instrument in each group