coding repeat measure when both on fixed and on random effect?

nk3

New Member
#1
Hi
I cannot seem to fully code my design , any advice greatly appreciated.

I trying to work out if there is a difference in the systolic readings for different days (DayIndex)
Each mouse is measured on five days and on each day is measured fifteen times (MeasurementNumber)

so I have intrepreted this as I have a fixed effect of Day
I also have a repeat measure of measurements within a day

this gave me:
MIXED Systolic BY DayIndex
/CRITERIA=CIN(95) MXITER(100) MXSTEP(5) SCORING(1) SINGULAR(0.000000000001) HCONVERGE(0,
ABSOLUTE) LCONVERGE(0, ABSOLUTE) PCONVERGE(0.000001, ABSOLUTE)
/FIXED= DayIndex | SSTYPE(3)
/REPEATED=MeasurementNumber | SUBJECT(MouseIndex) COVTYPE(AR1)
/METHOD=REML
/PRINT= R SOLUTION TESTCOV
/EMMEANS=TABLES(DayIndex) COMPARE(DayIndex).

But I am concerned though how to do I code in the repeat reading aspect across days?

Best wishes
Natasha