Table 2.
Linear mixed model results for the comparison of outcome variables between the two IBS groups.
| Group | Intervention effect at 6 weeks (reference: Baseline) | Intervention effect at 12 weeks (reference: Baseline) | Group difference of intervention effect at 12 weeks (reference: Online Modules) | |||
|---|---|---|---|---|---|---|
|
|
|
|
||||
| Estimate (b) | p-Value | Estimate (b) | p-Value | Estimate (b) | p-Value | |
| BPI average pain intensity | ||||||
| Nurse-Led Online Modules | −0.638 | 0.007 | −0.730 | 0.003 | −0.138 | 0.674 |
| Online Modules | −0.209 | 0.331 | −0.592 | 0.009 | ||
| BPI pain interference | ||||||
| Nurse-Led Online Modules | −0.428 | 0.153 | −1.194 | <0.001 | −0.424 | 0.311 |
| Online Modules | −0.259 | 0.344 | −0.770 | 0.008 | ||
| IBS-QOL: Total score | ||||||
| Nurse-Led Online Modules | 8.031 | <0.001 | 10.489 | <0.001 | 6.125 | 0.040 |
| Online Modules | 2.791 | 0.151 | 4.364 | 0.033 | ||
| PROMIS Anxiety T-score | ||||||
| Nurse-Led Online Modules | −1.236 | 0.368 | −3.433 | 0.016 | −3.345 | 0.086 |
| Online Modules | 1.509 | 0.232 | −0.088 | 0.932 | ||
| PROMIS Depression T-score | ||||||
| Nurse-Led Online Modules | −0.341 | 0.782 | −1.883 | 0.137 | −1.823 | 0.286 |
| Online Modules | 0.594 | 0.590 | −0.060 | 0.956 | ||
| PROMIS Fatigue T-score | ||||||
| Nurse-Led Online Modules | −1.120 | 0.387 | −2.238 | 0.098 | −1.469 | 0.423 |
| Online Modules | 2.843 | 0.020 | −0.770 | 0.534 | ||
| PROMIS Sleep Disturbance T-score | ||||||
| Nurse-Led Online Modules | −1.013 | 0.397 | −1.053 | 0.394 | −0.866 | 0.597 |
| Online Modules | 1.367 | 0.209 | −0.187 | 0.883 | ||
Note: IBS, irritable bowel syndrome; BPI, brief pain inventory; QOL, quality of life; PROMIS, Patient-Reported Outcomes Measurement Information System. Bold statistically significant p < 0.05.