Table 2.
Correlations between clinical variables and ML-predicted/clinically rated scores.
| Blunted vocal affect | Alogia | |||
|---|---|---|---|---|
| Clinical ratings | Predicted scores | Clinical ratings | Predicted scores | |
| Global psychiatric symptoms | ||||
| BPRS: Agitation | −0.09 | −0.22 | 0.02 | 0.15 |
| BPRS: Positive | 0.28* | 0.06 | 0.14 | −0.02 |
| BPRS: Negative | 0.82* | 0.63* | 0.46* | 0.20 |
| BPRS: Affect | −0.11 | −0.13 | −0.06 | 0.06 |
| Schizophrenia-spectrum symptoms | ||||
| SAPS: Hallucinations | 0.37* | 0.19 | 0.13 | −0.05 |
| SAPS: Delusions | 0.27 | 0.26 | 0.27 | 0.05 |
| SAPS Bizarre behavior | 0.07 | −0.02 | 0.18 | 0.03 |
| SAPS: Thought disorder | −0.13 | −0.12 | 0.17 | 0.19 |
| SANS: Blunted affect | 0.85* | 0.62* | 0.43* | 0.20 |
| SANS: Alogia | 0.46* | 0.34* | 1.00 | 0.57* |
| SANS: Apathy | −0.17 | 0.10 | 0.07 | 0.00 |
| SANS Anhedonia | 0.14 | 0.18 | 0.19 | 0.08 |
| Functioning | ||||
| Cognition | −0.30* | −0.29* | −0.14 | 0.03 |
| Social functioning | −0.27+ | −0.28+ | −0.28+ | −0.31* |
Bivariate correlations between ML “Predicted” scores (from Machine Learning) and Clinically Rated Blunted Vocal Affect and Alogia scores and clinical symptom and functioning variables. ML scores for each audio recording were averaged across participants (total K samples = 1745, n = 55).
ML machine learning.
*p < 0.05; +p < 0.10.