Table 1 Baseline participant characteristics, sedentary time, and mediator variables by intervention group
|  | SB | PA | SB + PA | Control | Total |
|---|---|---|---|---|---|
Variable | (n = 74) | (n = 75) | (n = 80) | (n = 64) | (N = 293) |
Child age (years) | 7.9 (1.4) | 7.8 (1.4) | 8.0 (1.4) | 8.1 (0.4) | 8.0 (1.3) |
Child sex (%) | |||||
  Boys | 36.5 | 47.4 | 51.2 | 40.6 | 44.2 |
  Girls | 63.5 | 52.6 | 48.8 | 59.4 | 55.8 |
Parental education (%) | |||||
  Low | 13.5 | 14.5 | 17.5 | 12.5 | 14.6 |
  Medium | 37.8 | 38.1 | 45.0 | 53.1 | 43.2 |
  High | 48.7 | 47.4 | 37.5 | 34.4 | 42.2 |
Country of birth (%) | |||||
  Australia | 70.3 | 67.1 | 61.2 | 75.0 | 66.9 |
  Other | 29.7 | 32.9 | 38.8 | 25.0 | 33.1 |
Classroom sedentary time (% of wear time) | |||||
  Baseline | 58.9 (5.9) | 60.4 (6.4) | 62.1 (7.0) | 60.8 (5.8) | 60.6 (6.4) |
  Mid-intervention | 60.1 (6.6) | 60.1 (6.2) | 60.2 (6.8) | 62.7 (4.8) | 60.7 (6.3) |
Weekday sedentary time (min/day) | |||||
  Baseline | 62.9 (7.5) | 64.4 (8.3) | 63.4 (6.7) | 64.6 (6.1) | 63.8 (7.2) |
  Mid-intervention | 61.5 (7.8) | 64.4 (6.9) | 62.5 (6.6) | 63.0 (6.0) | 62.8 (6.9) |
Child enjoyment of standing in classa | |||||
  Baseline | 2.2 (1.4) | 2.4 (1.3) | 2.5 (1.3) | 2.2 (1.4) | 2.3 (1.3) |
  Mid-intervention | 3.3 (1.3) | 2.9 (1.3) | 2.9 (1.4) | 2.4 (1.4) | 2.9 (1.4) |
Parent outcome expectancies of child standing in classa | |||||
  Baseline | 3.0 (0.6) | 2.9 (0.6) | 3.0 (0.6) | 2.8 (0.6) | 2.9 (0.6) |
  Mid-intervention | 3.2 (0.6) | 3.0 (0.6) | 3.1 (0.6) | 2.9 (0.6) | 3.1 (06) |
Teacher outcome expectancies of children standing in classa | |||||
  Baseline | 2.2 (0.4) | 2.4 (0.4) | 2.5 (0.7) | 2.5 (0.7) | 2.4 (0.6) |
  Mid-intervention | 2.1 (0.5) | 2.3 (0.7) | 2.1 (0.6) | 2.3 (0.5) | 2.2 (0.6) |
Child perceived access to standing opportunities in the classroom environmentb | |||||
  Baseline | 1.6 (0.4) | 1.6 (0.5) | 1.6 (0.4) | 1.6 (0.4) | 1.6 (0.4) |
  Mid-intervention | 1.9 (0.4) | 1.8 (0.5) | 1.8 (0.4) | 1.5 (0.3) | 1.8 (0.4) |