| Level 1 (within-person, t): |
| SBP-Rti = ß0ti + ß1ti(Tertile) + rti |
| Level 2 (between-person, i): |
| ß0i = γ10 + γ01(SBP baseline) + γ02(Cognition) + γ03(Physical health challenges) + u0i |
| ß1i = γ10 + γ11(Cognition) + γ12(Physical Health Challenges) |
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