Table 2.
Characteristics of the analytic and full samples at Wave 4, LSAC dataa
| Variable [wave of measurement] | Analytic sample (n = 1043)b | Full sample (n = 4169)c |
|---|---|---|
| Males, n (%) [w1] | 538 (51.6%) | 1594 (51.0%) |
| Age of child, mean (SD) [w4] | 10.9 (0.3) | 10.9 (0.3) |
| Family socioeconomic position index, mean (SD) [w4] d | 0.0 (1.0) | 0.0 (1.0) |
| Child attends public school, n (%) [w4] | 642 (62.0%) | 2008 (64.6%) |
| Speaks a language other than English at home, n (%) [w4] | 84 (8.2%) | 251 (8.2%) |
| Aboriginal or Torres Strait Islander, n (%) [w1] | 23 (2.2%) | 95 (3.0%) |
| Single-parent family, n (%) [w4] | 148 (14.2%) | 504 (16.1%) |
| Lives in regional or remote area, n (%) [w4] | 472 (15.2%) | 149 (14.3%) |
| Attended school on day of TUD, n (%) [w4] | 641 (61.5%)*** | 1457 (49.4%)*** |
| Season of measurement, n (%) [w4] | ||
| Summer | 5 (0.5%) | 17 (0.5%) |
| Autumn | 269 (25.8%) | 814 (26.0%) |
| Winter | 548 (52.5%) | 1564 (50.0%) |
| Spring | 221 (21.2%) | 731 (23.4%) |
n number of participants, w wave, % proportion of sample, SD standard deviation
Bold text indicates statistically significant differences: ***p < 0.001
a.The analytic sample was selected due to having a decline in non-organized PA participation between 11 and 13 years and a consistent ‘type of day’ in the TUD in both waves.
b.Variable-specific missing data for analytic sample: socioeconomic position (n = 10), school type (n = 8), language spoken at home (n = 22), number of parents in home (n = 2), remoteness (n = 2).
c.Variable-specific missing data for full sample: socioeconomic position (n = 25), school type (n = 19), language spoken at home (n = 83), Aboriginal or Torres Strait Islander status (n = 2), number of parents in home (n = 3), remoteness (n = 18), TUD day type (n = 175).
d.The socioeconomic position index was z-scored and ranged from − 5.4 to 2.9 in the overall sample.