Table 5.
Results of the linear mixed-effects regressions on acoustic measurements.
| Fixed effect | Estimate | SE | t (df) | p | |
|---|---|---|---|---|---|
| Speech rate | (Intercept) | 2.814 | 0.176 | 16.020 (9.8) | < .001 |
| Talker_HD | 0.396 | 0.237 | 1.670 (8.1) | .133 | |
| Style_Conversational | 2.149 | 0.032 | 66.800 (1509) | < .001 | |
| Talker_HD: Conversational | −0.525 | 0.045 | −11.550 (1509) | < .001 | |
| Average F0 | (Intercept) | 199.531 | 7.052 | 28.296 (8.1) | < .001 |
| Talker_HD | −6.593 | 9.955 | −0.662 (8.1) | .526 | |
| Style_Conversational | −6.013 | 1.056 | −5.692 (1509) | < .001 | |
| Talker_HD: Conversational | 6.360 | 1.494 | 4.257 (1509) | < .001 | |
| F0 range | (Intercept) | 210.863 | 11.400 | 18.497 (9) | < .001 |
| Talker_HD | −21.817 | 15.952 | −1.368 (8.6) | .206 | |
| Style_Conversational | −53.975 | 4.320 | −12.495 (1509.5) | < .001 | |
| Talker_HD: Conversational | 31.564 | 6.109 | 5.167 (1509.5) | < .001 | |
| Energy: 1–3 kHz | (Intercept) | 18.018 | 2.855 | 6.311 (8.1) | < .001 |
| Talker_HD | −1.415 | 4.032 | −0.351 (8) | .735 | |
| Style_Conversational | −2.488 | 0.161 | −15.473 (1509) | < .001 | |
| Talker_HD: Conversational | 1.891 | 0.227 | 8.318 (1509) | < .001 |
Note. Each intercept represents a reference condition: The talker group was the low-depressive group, and the sentence style was clear speech. HD = high depressive; F0 = fundamental frequency.