Table 2. Comparison of multilevel models in which one facial action predicts FS (left column) or RPE (right column).
| FS | RPE | |||||||
|---|---|---|---|---|---|---|---|---|
| model | K | AICC | Delta AICC | W | K | AICC | Delta AICC | W |
| reduceda | 7 | 2807.19 | 37.11 | 0 | 7 | 4192.92 | 57.86 | 0 |
| mouth open | 11 | 2796.18 | 26.10 | 0 | 11 | 4135.06 | 0 | 0 |
| jaw drop | 11 | 2810.51 | 40.43 | 0 | 11 | 4184.02 | 48.96 | 0 |
| nose wrinkle | 11 | 2770.08 | 0 | 1 | 11 | 4197.21 | 62.14 | 0 |
| lip pucker | 11 | 2805.21 | 35.13 | 0 | 11 | 4197.64 | 62.58 | 0 |
| upper lip raise | 8b | 2796.12 | 26.04 | 0 | 11 | 4199.05 | 63.99 | 0 |
| lid tighten | 11 | 2788.75 | 18.67 | 0 | 11 | 4200.74 | 65.68 | 0 |
| eye closure | 11 | 2810.74 | 40.66 | 0 | 11 | 4198.96 | 63.90 | 0 |
| smile | 11 | 2780.83 | 10.75 | 0 | 11 | 4200.38 | 65.32 | 0 |
| lip stretch | 11 | 2811.84 | 41.76 | 0 | 11 | 4197.89 | 62.82 | 0 |
| cheek raise | 11 | 2796.27 | 26.19 | 0 | 11 | 4199.80 | 64.74 | 0 |
| lip press | 11 | 2808.03 | 37.95 | 0 | 11 | 4198.29 | 63.23 | 0 |
| dimpler | 11 | 2813.96 | 43.88 | 0 | 11 | 4197.60 | 62.53 | 0 |
| brow furrow | 11 | 2803.04 | 32.96 | 0 | 11 | 4200.38 | 65.32 | 0 |
| eye widen | 11 | 2811.23 | 41.15 | 0 | 11 | 4188.29 | 53.23 | 0 |
| lip corner depressor | 8b | 2807.60 | 37.52 | 0 | 11 | 4200.32 | 65.25 | 0 |
| lip suck | 11 | 2814.52 | 44.44 | 0 | 11 | 4201.08 | 66.02 | 0 |
| inner brow raise | 11 | 2809.52 | 39.44 | 0 | 11 | 4200.38 | 65.32 | 0 |
| brow raise | 11 | 2813.85 | 43.77 | 0 | 11 | 4200.81 | 65.75 | 0 |
| chin raise | 11 | 2813.14 | 43.06 | 0 | 11 | 4200.92 | 65.86 | 0 |
| smirk | 11 | 2804.41 | 34.33 | 0 | 11 | 4197.28 | 62.22 | 0 |
FS, Feeling Scale; RPE, Rating of perceived exertion; K, number of parameters; AICC, Akaike information criterion corrected; W, weight of evidence. Models predicted FS (left column) resp. RPE (right column) with each facial action as a fixed and random factor while controlling for the influence of RPE resp. FS.
aThe reduced model describes the respective outcome variable predicted by the respective covariate (left column: RPE predicting FS, right column: FS predicting RPE).
bThe models with upper lip raise and lip corner depressor as a predictor of FS failed to converge. Therefore, a more parsimonious model without the facial action as a random factor was calculated, resulting in a smaller number of parameters (K).