|
Intraclass correlation coefficient (ICC)
|
---|
Time point
|
Modela
|
ICC value
|
95% confidence interval
|
p-value
|
---|
4 months
|
ICC (A,1)
|
0.948
|
0.925–0.966
|
< 0.001
|
ICC (A,k)
|
0.991
|
0.987–0.994
|
< 0.001
|
12 months
|
ICC (A,1)
|
0.944
|
0.916–0.965
|
< 0.001
|
ICC (A,k)
|
0.99
|
0.985–0.994
|
< 0.001
|
18 months
|
ICC (A,1)
|
0.924
|
0.884–0.953
|
< 0.001
|
ICC (A,k)
|
0.987
|
0.979–0.992
|
< 0.001
|
- aModel structure, type, and definition based on the McGraw and Wong classification. All computations considered two-way random effect models, absolute agreement, for ICC (A,1), single measurement; and ICC (A,k), average measurements