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Descriptive statistics for study variables, by sex, and t tests for sex differences
| Boys | Girls | t | df | p | |||||
|---|---|---|---|---|---|---|---|---|---|
| M | SD | N | M | SD | N | ||||
| Activity participation | 8.09 | 5.61 | 1,129 | 7.15 | 5.09 | 1,153 | 4.19 | 2,280 | .000 |
| Competence | 12.05 | 2.22 | 1,581 | 11.77 | 2.14 | 1,478 | 3.55 | 3,057 | .000 |
| Relatedness | 12.58 | 2.16 | 1,564 | 12.63 | 2.18 | 1,471 | −71 | 3,033 | .481 |
| Autonomy | 13.04 | 1.80 | 1,563 | 12.94 | 1.77 | 1,473 | 1.51 | 3,034 | .131 |
| Life satisfaction | 27.62 | 5.36 | 1,573 | 25.33 | 5.97 | 1,464 | 11.11 | 2,942 | .000 |
