TABLE 5.
Results of multilevel mixed-effects linear model for the main outcome of tissue thickness. The fixed effects part of the model tested the influence of TAWSSmax on thickness, whilst the random effect part of the model tested the influence of the patient. From these results, the influence of WSS alone on thickness does not occur in isolation and the variance occurring at the patient level is an important influencing factor.
| Coef | Standard error | 95% CI | p Value | |
|---|---|---|---|---|
| TAWSSmax | −0.016 | 0.024 | −0.063–0.031 | 0.496 |
| Patient | 0.032 | 0.019 | 0.010–0.105 | — |
| Var (estimate tissue thickness) | 0.100 | 0.015 | 0.074–0.133 | — |
| Likelihood ratio test vs linear model | — | — | — | 0.0002 |