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Table 4 Slope and significance for time × draw groups 1–3 interaction for Aβ40 and Aβ42

From: An integrated multi-study analysis of intra-subject variability in cerebrospinal fluid amyloid-β concentrations collected by lumbar puncture and indwelling lumbar catheter

 

Aβ40

Aβ42

Time × draw group

Slope

p value

Slope

p value

1

0.41

0.56

1.02

0.25

2

1.6

0.12

0.79

0.45

3

4.12

<0.001*

4.32

<0.001*

  1. *p < 0.05