Discriminative value of three facial expressions after first stimulus slide (cartoon)
| Expression | ||||||
|---|---|---|---|---|---|---|
| Surprise | Frown | Smile | ||||
| Observer #1 | Observer #2 | Observer #1 | Observer #2 | Observer #1 | Observer #2 | |
| Disease+ (median) | 0 | 0 | 0 | 0 | 0 | 0 |
| Disease+ (IQR) | (0–0) | (0–0) | (0–0) | (0–0) | (0–0) | (0–1) |
| *Range disease+ | 0–3 | 0–0 | 0–1 | 0–0 | 0–5 | 0–5 |
| Disease− (median) | 1.9 | 2.4 | 0.6 | 1.1 | 1.3 | 1.8 |
| Disease− (IQR) | (0–2) | (0–3) | (0–2) | (0–2) | (0–2) | (0–4) |
| *Range disease− | 0–11 | 0–13 | 0–4 | 0–5 | 0–10 | 0–12 |
| †p (Disease+ vs Disease−)* | 0.033 | 0.022 | 0.12 | |||
| Area under ROC curve | 0.752 (0.52–.87) | 0.724 (0.49–0.85) | 0.571 (0.33–0.71 | |||
*Maximum possible scores: surprise=15, frown=5, smile=20.
†Mann–Whitney U.