Table 2.

Bias-corrected bootstrapped $95\%$ confidence intervals for the monotonic mediation model for child adaptation as a function of family functioning as mediated by difficulty controlling for having Crohn’s disease or a bowel disorder with independent omitted factors or errors

Family functioning x	Lower bound $L\left(x\right)$ on natural indirect effecta	Upper bound $U\left(x\right)$ on natural indirect effecta	Normalized width $W$ of the confidence intervalb
1	2.28	8.19	0.72
2	9.14	32.76	0.72
3	20.56	73.72	0.72
4	36.55	130.05	0.72

^aUsing 1,000 resamples

^b W = (U(x) − L(x))/U(x), which is constant in $x$