Table 2.
Effects (b coefficients and relative risks (RR)) of height, adjusted for income, age and survey year, on BMI and overweight increase in Brazilian adolescents over four surveys (1974/975, 1989, 2002/3 and 2008/9)
| Boys | Girls | |||||||
|---|---|---|---|---|---|---|---|---|
| BMI | Overweight | BMI | Overweight | |||||
| Variable | b | se | RR | se | b | se | RR | se |
| Survey year | ||||||||
| 1974/5 | 0·00 | 1·00 | 0·00 | 1·00 | ||||
| 1989 | 0·98 | 0·02 | 0·78 | 0·67 | 0·99 | 0·04 | 2·38 | 2·08 |
| 2002/3 | 1·19* | 0·03 | 113·83* | 84·67 | 1·52* | 0·06 | 224·91* | 162·73 |
| 2008/9 | 1·19* | 0·03 | 57·35* | 33·89 | 1·61* | 0·06 | 282·38* | 178·88 |
| Height (cm) | 1·00* | 0·00 | 1·03* | 0·00 | 1·00* | 0·00 | 1·02* | 0·00 |
| Survey year and height (cm) interaction | ||||||||
| 1974/5×height | 0·00 | 1·00 | 0·00 | 1·00 | ||||
| 1989×height | 1·00* | 0·00 | 1·01 | 0·01 | 1·00 | 0·00 | 1·00 | 0·00 |
| 2002/3×height | 1·00* | 0·00 | 0·98* | 0·00 | 1·00* | 0·00 | 0·97* | 0·00 |
| 2008/9×height | 1·00* | 0·00 | 0·99* | 0·00 | 1·00* | 0·00 | 0·97* | 0·00 |
| Age (years) | 1·00* | 0·00 | 0·99* | 0·00 | 1·00* | 0·00 | 1·00 | 0·00 |
| Survey-specific income quintiles | ||||||||
| 1st quintile | 0·00 | 1·00 | 0·00 | 1·00 | ||||
| 2nd quintile | 1·01* | 0·00 | 1·46* | 0·11 | 1·01* | 0·00 | 1·30* | 0·08 |
| 3rd quintile | 1·03* | 0·00 | 1·92* | 0·14 | 1·02* | 0·00 | 1·49* | 0·09 |
| 4th quintile | 1·04* | 0·00 | 2·42* | 0·18 | 1·02* | 0·00 | 1·61* | 0·10 |
| 5th quintile | 1·06* | 0·00 | 3·12* | 0·22 | 1·00* | 0·00 | 1·69* | 0·11 |
*P<0·01.