Selected demographic variables and mean body fat percentage by sport participation status at each wave
| N (%) | Males (%) | Females (%) | Standardised household income (95% CIs) | Unadjusted body fat percentage (95% CIs) | Adjusted* body fat percentage (95% CIs) | |
| Total sample over all waves | 4268 | 2194 (51.2%) | 2092 (48.8%) | |||
| Age 10 years (wave 4) | ||||||
| Total | 4159 | 2126 | 2033 | 1033.67 (1003.80 to 1063.37) | 18.71 (18.19 to 19.23) | |
| Sport participants | 3267 (78.6%) | 1776 (83.5%) | 1491 (73.3%) | 1079.53 (1046.50 to 1113.32) | 18.63 (18.13 to 19.15) | |
| Team sport | 2603 (62.4%) | 1476 (69.4%) | 1127 (55.4%) | 1093.99 (1056.96 to 1133.24) | 18.60 (17.99 to 19.21) | |
| Individual sport | 1906 (45.7%) | 983 (46.2%) | 1110 (54.6%) | 1129.84 (1088.94 to 1176.07) | 18.45 (17.79 to 19.17) | |
| Non-participants | 892 (21.4%) | 350 (16.5%) | 542 (26.7%) | 826.09 (776.08 to 879.06) | 19.06 (17.73 to 20.41) | |
| Age 12 years (wave 5) | ||||||
| Total | 3911 | 1996 | 1915 | 1173.07 (1133.81 to 1212.18) | 20.86 (20.44 to 21.27) | |
| Sport participants | 2401 (61.4%) | 1311 (65.7%) | 1090 (56.9%) | 1243.02 (1196.75 to 1296.66) | 20.05 (19.60 to 20.51) | |
| Team sport | 1875 (47.4% | 1044 (52.3%) | 831 (43.4%) | 1236.50 (1186.68 (1289.02) | 20.05 (19.51 to 20.59) | |
| Individual sport | 1064 (26.9%) | 549 (27.5%) | 515 (24.6%) | 1327.42 (1243.41 to 1431.40) | 19.67 (19.00 to 20.36) | |
| Non-participants | 1510 (38.6%) | 685 (31.2%) | 825 (43.1%) | 1051.24 (999.30 to 1110.40) | 22.26 (21.55 to 22.96) | |
| Age 14 years (wave 6) | ||||||
| Total | 3454 | 1759 | 1695 | 1265.87 (1227.41 to 1303.28) | 20.97 (20.53 to 21.46) | |
| Sport participants | 1819 (52.7%) | 991 (56.3%) | 828 (48.8%) | 1349.79 (1300.47 to 1401.48) | 20.05 (19.48 to 20.60) | |
| Team sport | 1421 (40.2%) | 787 (44.7%) | 634 (37.4%) | 1367.44 (1309.01 to 1421.73) | 20.08 (19.48 to 20.69) | |
| Individual sport | 745 (21.1%) | 395 (22.5%) | 350 (20.6%) | 1360.15 (1278.09 to 1447.83) | 20.07 (19.26 to 20.89) | |
| Non-participants | 1635 (47.3%) | 768 (43.7%) | 867 (51.2%) | 1168.54 (1121.42 to 1230.96) | 22.05 (21.38 to 22.73) | |
| Transition 10–12 years | ||||||
| Non-participants | 566 (14.8%) | 218 (11.2%) | 348 (18.6%) | 936.47 (863.45 to 1013.46) | 22.13 (21.01 to 23.35) | 21.78 (21.01 to 22.56) |
| Drop-outs | 894 (23.4%) | 445 (22.8%) | 449 (24.0%) | 1114.90 (1039.46 to 1193.52) | 19.21 (18.20 to 20.26) | 21.99 (21.39 to 22.59) |
| Commencers | 240 (6.3%) | 99 (5.1%) | 141 (7.5%) | 911.63 (803.17 to 1015.78) | 21.44 (19.55 to 23.34) | 21.49 (20.28 to 22.69) |
| Participants | 2119 (55.5%) | 1187 (60.9%) | 932 (49.8%) | 1271.83 (1219.76 to 1330.50) | 19.93 (19.45 to 20.42) | 20.54 (20.15 to 20.93) |
| Transition 12–14 years | ||||||
| Non-participants | 891 (26.4%) | 388 (22.7%) | 503 (30.2%) | 814.64 (617.16 to 1059.74) | 22.29 (21.34 to 22.23) | 21.11 (20.52 to 21.72) |
| Drop-outs | 705 (20.9%) | 354 (20.8%) | 351 (21.1%) | 1239.75 (1159.67 to 1325.42) | 21.75 (20.85 to 22.70) | 21.60 (20.94 to 22.25) |
| Commencers | 376 (11.1%) | 182 (10.7%) | 194 (11.6%) | 1247.60 (1146.90 to 1359.36) | 22.13 (20.91 to 23.34) | 20.92 (20.04 to 21.80) |
| Participants | 1401 (41.5%) | 782 (45.8) | 619 (37.1%) | 1376.94 (1317.61 to 1441.30) | 19.50 (18.90 to 20.12) | 20.48 (20.02 to 20.94) |
*Marginal means were estimated using general linear models, and were adjusted for sex, BMI, standardised household income, neighbourhood SEP and baseline body fat percentage (where appropriate).
BMI, body mass index; SEP, socioeconomic position.