Table 5.
Intrarater reliability of AIMS scores for rater C.
| Group | First scoring | Second scoring | Intra-rater reliability | |||
|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | ICC | 95%CI | |
| 0–3 months (n = 23) | ||||||
| Prone | 2.48 | 1.28 | 2.52 | 1.28 | 0.828 | 0.595–0.927 |
| Supine | 2.35 | 1.19 | 2.39 | 0.89 | 0.726 | 0.354–0.884 |
| Sitting | 0.70 | 0.77 | 0.57 | 0.73 | 0.724 | 0.349–0.883 |
| Standing | 0.87 | 0.46 | 1.13 | 0.55 | 0.754 | 0.419–0.896 |
| Total score | 6.39 | 3.07 | 6.61 | 2.78 | 0.811 | 0.554–0.920 |
| 4–9 months (n = 27) | ||||||
| Prone | 6.59 | 2.83 | 6.56 | 2.79 | 0.981 | 0.959–0.992 |
| Supine | 5.70 | 1.79 | 5.74 | 1.87 | 0.991 | 0.981–0.996 |
| Sitting | 4.00 | 3.08 | 4.30 | 3.04 | 0.977 | 0.950–0.990 |
| Standing | 1.81 | 1.11 | 2.19 | 0.88 | 0.728 | 0.403–0.876 |
| Total score | 18.11 | 7.83 | 18.78 | 8.06 | 0.992 | 0.983–0.997 |
| 0–9 months (n = 50) | ||||||
| Prone | 4.62 | 3.10 | 4.70 | 3.00 | 0.987 | 0.977–0.993 |
| Supine | 4.20 | 2.21 | 4.20 | 2.25 | 0.988 | 0.978–0.993 |
| Sitting | 2.46 | 2.84 | 2.58 | 2.94 | 0.983 | 0.970–0.990 |
| Standing | 1.40 | 0.97 | 1.70 | 0.91 | 0.819 | 0.681–0.897 |
| Total score | 12.68 | 8.45 | 13.18 | 8.69 | 0.994 | 0.989–0.996 |
95%CI: 95% confidence interval; AIMS: Alberta Infant Motor Scale; ICC: intraclass correlation coefficient; SD: standard deviation.