Table 6.
GI Symptom Severity Mediates Intervention Effects on QoL at 3 Month Follow-Up
| IBS-QoL (Baseline) |
PATH a |
95% CI a |
PATH b |
95% CI b |
PATH c’ |
95% CI c’ |
PATH ab |
95% CI ab |
HEDGE’S (INDIRECT EFFECT) g |
|---|---|---|---|---|---|---|---|---|---|
| High | −0.93* (.46) |
−1.83 −0.03 |
−0.88* (.321) |
−1.51 −0.25 |
−0.12 (1.31) |
−2.69 2.45 |
0.82 | −0.17 1.80 |
.43 |
| Moderate | −1.74* (.46) |
−2.64 −0.84 |
−0.88* (.321) |
−1.51 −0.25 |
1.75* (1.39) |
−0.97 4.47 |
1.53* | 0.18 2.88 |
.59 |
| Low | −2.55* (.46) |
−3.45 −1.65 |
−0.88* (.321) |
−1.51 −0.25 |
3.61* (1.51) |
0.65 6.57 |
2.24* | 0.46 4.03 |
.65 |
CI: 95% bootstrapped confidence intervals
A = change in the mediator at posttest,
b = the direct effect of the mediator on the outcome,
c’= the direct effect of intervention on the outcome variable,
a*b = the indirect effect of intervention on the outcome
*
= parameter estimates where 95% CI do not contain zero.
The psychoeducation intervention effect was represented by the class (intervention) versus wait-list (control) contrast coded 1 −1.