Table 2.
Mean score changes from T1 to T2 according to lifetime psychiatric history (3-category)
| IDAS II symptom measures | Time assessed | ||
|---|---|---|---|
| T1 | T2 | Overall model F (df) | |
| General depression | |||
| No psych history | 31.9 (28.4–35.4) | 32.8 (29.3–36.3) | F(2, 372) = 8.0*** |
| Only-past psych history | 36.7 (33.7–39.6) | 36.4 (33.5–39.4) | |
| Recent psych history | 47.6 (44.9–50.4) | 41.7 (39.0–44.5)a* | |
| Suicidality | |||
| No psych history | 6.5 (5.8–7.2) | 6.5 (5.9–7.1) | F(2, 370) = 2.4† |
| Only-past psych history | 6.9 (6.3–7.5) | 6.8 (6.3–7.4) | |
| Recent psych history | 7.9 (7.3–8.5) | 7.2 (6.7–7.7) | |
| Anxiety | |||
| No psych history | 7.4 (6.5–8.3) | 7.2 (6.3–8.1) | F(2, 371) = 2.9† |
| Only-past psych history | 8.4 (7.6–9.2) | 8.0 (7.2–8.7) | |
| Recent psych history | 10.8 (10.1–11.5) | 9.4 (8.8–10.1) | |
| Traumatic avoidance and intrusion | |||
| No psych history | 5.2 (4.3–6.0) | 5.3 (4.5–6.2) | F(2, 371) = 7.7** |
| Only-past psych history | 5.7 (5.0–6.5) | 5.7 (4.9–6.4) | |
| Recent psych history | 8.1 (7.5–8.8) | 6.7 (5.9–7.3)a* | |
| Wellbeing | |||
| No psych history | 25.8 (23.4–28.2) | 22.2 (20.0–25.0) | F(2, 371) = 4.2* |
| Past psych history | 24.5 (22.5–26.6) | 22.6 (20.4–24.7) | |
| Recent psych history | 20.7 (18.6–22.8) | 20.8 (18.7–22.8) | |
Estimates (mean scores with 95% confidence intervals) obtained using general linear mixed models (GLMM) analysis, with mean IDAS II scores as a dependent variable. Higher mean scores indicate greater psychiatric symptoms or greater wellbeing. Bonferroni corrections were used for multiple comparisons. All models shown are controlling for family relatedness, and one or more of age, marital status, and MDD risk (variables found to be marginally or significantly associated with psychiatric history and significantly associated with T1–T2) symptom change. Bold results on the rightmost column indicate the significance of overall time × psychiatric history model. †p < 0.10; *p < 0.05; **p < 0.01; ***p < 0.001.
Significant decrease in symptoms from T1 to T2 among individuals with recent psychiatric history.