Table 1.
Age in months | Mean | SD | CV | Minimum | Maximum |
---|---|---|---|---|---|
6 | 167.2 | 28.7 | 17.1 | 92.0 | 262.5 |
9 | 231.1 | 28.3 | 12.3 | 153.7 | 314.5 |
12 | 326.0 | 39.8 | 12.2 | 221.2 | 451.6 |
15 | 395.1 | 37.1 | 9.4 | 292.2 | 510.6 |
18 | 489.2 | 44.4 | 9.1 | 370.0 | 617.5 |
21 | 567.7 | 53.0 | 9.3 | 422.3 | 723.0 |
24 | 650.1 | 61.8 | 9.5 | 454.3 | 818.6 |
SD, standard deviation; CV, coefficient of variation.