Table 2.
ICC analysis—AIM3 factor and summarized domain scores.
| Measures | Intraclass correlation coefficient (ICC)** | Lower bound | Upper bound | Value | df1 | df2 | Sig | |
|---|---|---|---|---|---|---|---|---|
| ICC* Overall AIM3 factor scores |
Single | 0.547 | 0.471 | 0.634 | 73,806 | 74 | 4,070 | 0.000 |
| Average | 0.985 | 0.980 | 0.990 | 73,806 | 74 | 4,070 | 0.000 | |
| ICC Overall AIM3 domain (sum) scores |
Single | 0.697 | 0.548 | 0.852 | 157,441 | 14 | 770 | 0.000 |
| Average | 0.992 | 0.985 | 0.997 | 157,441 | 14 | 770 | 0.000 | |
| Domain 1 Sexual behavior |
Single | 0.280 | 0.084 | 0.941 | 25,225 | 2 | 110 | 0.000 |
| Average | 0.956 | 0.836 | 0.999 | 25,225 | 2 | 110 | 0.000 | |
| Domain 2 Nonsexual behavior |
Single | 0.331 | 0.108 | 0.952 | 38,129 | 2 | 110 | 0.000 |
| Average | 0.965 | 0.871 | 0.999 | 38,129 | 2 | 110 | 0.000 | |
| Domain 3 Developmental |
Single | 0.785 | 0.489 | 0.993 | 220,469 | 2 | 110 | 0.000 |
| Average | 0.995 | 0.982 | 1.000 | 220,469 | 2 | 110 | 0.000 | |
| Domain 4 Environmental/family |
Single | 0.804 | 0.517 | 0.994 | 241,548 | 2 | 110 | 0.000 |
| Average | 0.996 | 0.984 | 1.000 | 241,548 | 2 | 110 | 0.000 | |
| Domain 5 Self-regulation |
Single | 0.729 | 0.412 | 0.991 | 194,190 | 2 | 110 | 0.000 |
| Average | 0.993 | 0.975 | 1.000 | 194,190 | 2 | 110 | 0.000 |
ICC estimates and their 95% confidence intervals were calculated by two-way mixed effects model, absolute-agreement, and single and average measures.
“ICC values < 0.5 are indicative of poor reliability, values between 0.5 and 0.75 indicate moderate reliability, values between 0.75 and 0.90 indicate good reliability, and values > 0.90 indicate excellent reliability” (Koo & Li, 2016, p. 158).