Az ± SE

95% CI

ΔAz and p-value

Observation 1

0.772 ± 0.35

0.717 - 0.822

p = 0.49

ΔAz = 0.013

p = 0 .09

ΔAz = 0.031

Observation 2

0.786 ± 0.32

0.731 - 0.834

p = 0.08

ΔAz = 0.044

Observation 3

0.817 ± 0.029

0.765 - 0.862