Table 3. Acoustic Findings as a Function of Depression and Remission Classification.
| Variable | NDEP | FR | PR | DEP |
|---|---|---|---|---|
| Mean F0 | 284.1 (58.3) | 285.5 (50.9) | 285.3 (62.2) | 278.2 (55.7) |
| Mean ΔF0 | 150.1 (59.3)a | 158.7 (56.6)a | 123.8 (53.5)b | 122.5 (56.4)b |
| Mean F0 SD | 65.0 (23.4)a/b | 72.4 (26.6)b | 61.5 (24.6)a/b | 58.8 (22.7)a/c |
Means that do not share a subscript differ significantly from one another (p = .05). NDEP = non-depressed, FR = depression in full remission, PR = depression in partial remission, DEP = current clinical depression. Mean F0 refers to the average pitch across all 3 distinct “gorilla” utterances; mean ΔF0 refers to the average pitch range, a gross measure of change in pitch; mean F0 SD refers to the standard deviation of the pitch in “gorilla” utterances, a measure of the dispersion of F0 in relation to the mean.