Standard deviation height scores of children who have and have not repeated a grade
| Standard deviation height score | t | p | |||||
|---|---|---|---|---|---|---|---|
| Never repeated mean SD (n) | Ever repeated mean SD (n) | ||||||
| All children | 0.26 | 0.06 | −2.18 | 0.03 | |||
| 1.01 (2715) | 1.11 (129) | ||||||
| Boys | 0.30 | −0.04 | −3.09 | 0.01 | |||
| 0.97 (1349) | 1.17 (86) | ||||||
| Girls | 0.22 | 0.26 | 0.25 | 0.81 | |||
| 1.04 (1366) | 0.94 (43) | ||||||