. Author manuscript; available in PMC: 2010 Feb 28.

Published in final edited form as: Stat Med. 2009 Feb 28;28(5):814. doi: 10.1002/sim.3518

Table III.

Results of fitting candidate correlation models to data from the Breast Cancer Education Program for Samoan Women.

Model 1

Model 2

Model 3

Model 4

Model 5

h(ρ)

α₀

α₀ + α₁T

α₀ + α₂S

α₀ + α₁T + α₂S

α₀ + α₁T + α₂S + α₃TS

Intervention effect estimates

β̂₁

0.20

0.25

0.27

0.30

\hat{S E}

0.28

0.27

0.26

\hat{O R}

1.22

1.28

1.31

1.35

95% CI

(0.71, 2.10)

(0.75, 2.17)

(0.77, 2.22)

(0.81, 2.23)

(0.81, 2.25)

p-value

0.47

0.36

0.32

0.25

Intraclass correlation coefficient estimates (with 95% CIs)

ρ̂

0.19 (0.09,0.29)

ρ̂_C

0.06 (−0.02,0.14)

ρ̂_T

0.34 (0.23,0.45)

ρ̂_sm

0.12 (0.02,0.22)

ρ̂_lg

0.22 (0.07,0.36)

ρ̂_C,sm

−0.01 (−0.11,0.09)

0.01 (−0.06,0.08)

ρ̂_C,lg

0.08 (−0.02,0.18)

0.08 (−0.03,0.18)

ρ̂_T,sm

0.27 (0.14,0.41)

0.25 (0.07,0.42)

ρ̂_T,lg

0.36 (0.24,0.48)

0.37 (0.24,0.50)