Table 2.
Effect of Score on the Schizophrenia Negative Symptoms (NS) Subscale Item 6 (Emotional Withdrawal) and NS Subscale Item 7 (Passive, Apathetic, and Social Withdrawal) on Brain-Derived Neurotrophic Factor Level.
| Source | R 2 | Regression Coefficient | 95% CI [LB, UB] | R 2 Change (sr 2) | df | F | p |
|---|---|---|---|---|---|---|---|
| Model with Item 6 | |||||||
| Overall | .16 | 2,27 | 3.81 | .04 | |||
| Intercept | [−49.42, 26.73] | ||||||
| Age | 0.53 | [−0.10, 1.16] | .09 | 1,27 | 2.96 | .10 | |
| Item 6 | 1.95 | [0.09, 3.81] | .14 | 1,27 | 4.63 | .04 | |
| Model with Item 7 | |||||||
| Overall | .23 | 2,27 | 5.32 | .01 | |||
| Intercept | [−48.09, 24.84] | ||||||
| Age | 0.2 | [−0.08, 1.13] | .08 | 1,27 | 3.13 | .09 | |
| Item 7 | 2.15 | [0.53, 3.77] | .20 | 1,27 | 7.41 | .01 | |
Note. CI = confidence interval; LB = lower bound; UB = upper bound.