Table 2. Multiple Regression Analyses Predicting Platelet Serotonin Levels from Depressive Symptoms.
| Model 1* R2 (df), F, p | Model 2** R2 (df), F, p | |||||
| .049 (7, 34), 248, 969 |
.055 (7, 34), 281, 957 |
|||||
| Variables | β | SE_ β | p | β | SE_ β | p |
| Depressive symptoms | -4.09 | 3.83 | 293 | -.254 | 217 | 250 |
| Age | -.052 | 116 | 654 | -.060 | 116 | 607 |
| LVEF | -.018 | 147 | .901 | -.011 | .144 | .940 |
| Medication only vs. invasive | 1.69 | 4.04 | .678 | 2.33 | 4.08 | .571 |
| History of hypertension | 2.48 | 3.77 | .515 | 2.83 | 3.83 | .465 |
| History coronary stent | 2.45 | 3.78 | .521 | 2.87 | 3.85 | 461 |
| Current diagnosed AMI | -1.15 | 3.53 | .746 | -1.13 | 3.53 | 718 |
a. *Model 1 depression is analyzed as an independent dichotomous variable; b. **Model 2 depression is analyzed as an independent continuous variable; c. Depressive symptoms = Beck Depression Inventory-II score ≥ 14; c. table abbreviations: AMI= acute myocardial infarction. LVEF= left ventricular ejection fraction.