| Path | Estimate | 2.5%LLCI | 97.5%ULCI |
| IL ® IM | 0.462 | 0.343 | 0.597 |
| IM ® PB | −0.346 | −0.556 | −0.162 |
| IL ® IM ® PB (indirect effect) | −0.160 | −0.277 | −0.077 |
| IL ® PB (direct effect) | −0.095 | −0.263 | 0.048 |
| Total effect | −0.255 | −0.414 | −0.108 |