Table 2.
Stages of behaviour change among children in the intervention and comparison groups at the pre-intervention (time 1) and post-intervention (time 2) evaluations: 2038 children from nine intervention and eight comparative public and private elementary schools, Belo Horizonte, south-east Brazil
| Intervention (TIRE 10!) | Comparison (Agita Galera) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Time 1 | Time 2 | Time 1 | Time 2 | |||||||
| Stage of behaviour change | n | % | n | % | P value* | n | % | n | % | P value* |
| Fatty food consumption | ||||||||||
| Pre-contemplation | 350 | 31·9 | 92 | 9·6 | <0·001 | 120 | 16·4 | 165 | 25·0 | 0·045 |
| Contemplation | 217 | 19·8 | 154 | 16·1 | <0·001 | 87 | 11·9 | 73 | 11·1 | 0·045 |
| Preparation | 208 | 19·0 | 321 | 33·5 | <0·001 | 197 | 26·9 | 125 | 19·0 | 0·045 |
| Action | 162 | 14·8 | 203 | 21·2 | <0·001 | 109 | 14·9 | 103 | 15·6 | 0·045 |
| Maintenance | 159 | 14·5 | 189 | 19·7 | <0·001 | 220 | 30·0 | 193 | 29·3 | 0·045 |
| F&V consumption | ||||||||||
| Pre-contemplation | 237 | 21·7 | 67 | 7·0 | <0·001 | 81 | 11·0 | 86 | 13·1 | 0·582 |
| Contemplation | 282 | 25·8 | 133 | 13·8 | <0·001 | 104 | 14·1 | 65 | 9·9 | 0·582 |
| Preparation | 274 | 25·1 | 321 | 33·3 | <0·001 | 212 | 28·7 | 191 | 29·0 | 0·582 |
| Action | 75 | 6·9 | 185 | 19·2 | <0·001 | 69 | 9·3 | 61 | 9·3 | 0·582 |
| Maintenance | 225 | 20·6 | 257 | 26·7 | <0·001 | 272 | 36·9 | 256 | 38·8 | 0·582 |
| PA | ||||||||||
| Pre-contemplation | 104 | 9·7 | 23 | 2·4 | <0·001 | 42 | 5·8 | 50 | 7·4 | 0·745 |
| Contemplation | 166 | 15·4 | 47 | 4·9 | <0·001 | 46 | 6·3 | 45 | 6·7 | 0·745 |
| Preparation | 214 | 19·9 | 164 | 17·1 | <0·001 | 96 | 13·2 | 86 | 12·7 | 0·745 |
| Action | 137 | 12·7 | 263 | 27·5 | <0·001 | 111 | 15·2 | 93 | 13·8 | 0·745 |
| Maintenance | 455 | 42·3 | 460 | 48·1 | <0·001 | 434 | 59·5 | 401 | 59·4 | 0·745 |
| Sedentary activity (television/DVD) | ||||||||||
| Pre-contemplation | 455 | 42·3 | 183 | 19·2 | <0·001 | 201 | 27·4 | 245 | 36·8 | 0·055 |
| Contemplation | 130 | 12·1 | 150 | 15·7 | <0·001 | 71 | 9·7 | 50 | 7·5 | 0·055 |
| Preparation | 182 | 16·9 | 235 | 24·7 | <0·001 | 207 | 28·2 | 138 | 20·7 | 0·055 |
| Action | 112 | 10·4 | 169 | 17·7 | <0·001 | 86 | 11·7 | 82 | 12·3 | 0·055 |
| Maintenance | 197 | 18·3 | 216 | 22·7 | <0·001 | 168 | 22·9 | 151 | 22·7 | 0·055 |
| Sedentary activity (video games/computer) | ||||||||||
| Pre-contemplation | 303 | 28·2 | 140 | 15·0 | <0·001 | 149 | 21·3 | 168 | 26·9 | 0·740 |
| Contemplation | 109 | 10·2 | 96 | 10·3 | <0·001 | 56 | 8·0 | 31 | 5·0 | 0·740 |
| Preparation | 129 | 12·0 | 135 | 14·5 | <0·001 | 85 | 12·2 | 80 | 12·8 | 0·740 |
| Action | 160 | 14·9 | 183 | 19·6 | <0·001 | 142 | 20·3 | 93 | 14·9 | 0·740 |
| Maintenance | 372 | 34·7 | 379 | 40·6 | <0·001 | 267 | 38·2 | 252 | 40·4 | 0·740 |
F&V, fruit and vegetables; PA, physical activity.
*Marginal homogeneity test.