| Level 1 (repeated measures over time): | Yti = π0i + π1i(TIME)ti + eti |
| Level 2 (individuals): | π0i = β00 + β01(RACE) + β02(RACE*TIME) + r0i |
| π1i = β10 + β11 (RACE) + β12 (RACE*TIME) + r1i |
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