Table 1.
Study Visits and Measures: When Data Were Collected That Are Used to Test Hypotheses
| Variables | Baseline | Visit 1 | Visit 2 | Visit 3 | Visit 4 | Visit 6 | Visit 7 | Visit 8 | Visit 9 | Visit 10 |
|---|---|---|---|---|---|---|---|---|---|---|
| Diabetes | X | X | X | |||||||
| Hypertension | X | X | X | X | ||||||
| Depressive Symptoms | X | X | X | X | ||||||
| Smoking | X | X | X | X | ||||||
| EBMT | X | X | X | X | X | X | ||||
| SDMT | X | X | X | X | X | X | ||||
| DSB | X | X | X | X | X | X |
Note: EBMT= East Boston Memory Test; SDMT = Symbol Digit Modalities Test; DSB = Digit Span Backwards; Diabetes metrics were not collected at visit 2; Cognitive measures (EBMT, SDMT, DSB) at visit 4 and visit 6 were used to create the practice effect variable and excluded from longitudinal analysis. Cognitive trajectory was measured from visit 7 to visit 10, thus visit 7 is considered cognitive baseline.