Table 2

Baseline characteristics of the study sample

CharacteristicsControlInterventionTotal
Cluster level(n=10)(n=10)(n=20)
Mean number of participants (range)33 (15–47)34 (15–61)34 (15–61)
Mean (range) of students in cluster taking part (%)80 (69–100)79 (48–100)79 (48–100)
Individual level(n=333)(n=337)(n=670)
Age, mean (SD), years16.0 (0.5)16.0 (0.4)16.0 (0.4)
Female participants, n (%)130 (39.0)169 (50.1)299 (44.6)
Born in Australia, n (%)*291 (87.9)296 (88.4)587 (88.1)
English spoken at home, n (%)*308 (93.1)310 (92.5)618 (92.8)
Cultural background, n (%)*
Australian
European
African
Asian
Middle Eastern
Other
230 (69.5)
28 (8.5
3 (0.9)
18 (5.4)
3 (0.9)
49 (14.8)
239 (71.3)
39 (11.6)
3 (0.9)
21 (6.3)
4 (1.2)
29 (8.7)
469 (70.4)
67 (10.1)
6 (0.9)
39 (5.9)
7 (1.1)
78 (11.6)
Indigenous decent, n (%)*
Yes
No
37 (11.2)
294 (88.8)
24 (7.2)
311 (92.8)
61 (9.2)
605 (90.8)
Socioeconomic status, n (%)†
Low
Medium
High
48 (14.5)
170 (51.4)
113 (34.1)
81 (24.3)
169 (50.8)
83 (24.9)
129 (19.4)
339 (51.1)
196 (29.5)
Weight status, n (%)‡
Underweight
Healthy weight
Overweight
Obese
16 (4.9)
207 (63.1)
72 (22.0)
33 (10.1)
10 (3.0)
238 (71.5)
62 (18.6)
23 (6.9)
26 (3.9)
445 (67.3)
134 (20.3)
56 (8.5)
  • *Four participants did not answer the background demographic questions.

  • †Socioeconomic status determined by population tertile using socioeconomic indexes for areas of relative socioeconomic disadvantage based on residential postcode; six participants did not provide their residential postcode.

  • ‡Nine participants were not measured for height and/or weight.