|
Factors associated with serum retinol changes in Bogandé pupils (ANCOVA with repeat measures) |
||||
| Within subject effects |
||||
|
|
||||
| Source |
Sum of squares |
df |
F |
p |
|
|
||||
| Time factor (T0 – T1) |
0.78 |
1 |
12.60 |
<0.001 |
| Time factor* age |
1.45 |
23.50 |
<0.001 |
|
| Time factor * height-for-age Z-score |
0.42 |
1 |
6.87 |
0.009 |
| Time factor * sex |
0.10 |
1 |
1.65 |
0.20 |
| Time factor * treatment (school group) |
1.09 |
2 |
8.86 |
<0.001 |
| Time factor *sex * school group |
0.99 |
2 |
0.84 |
0.48 |
| Error |
20.34 |
329 |
- |
- |
| Between subject effects |
||||
| Age in months |
3.75 |
1 |
32.20 |
<0.001 |
| Height-for-age Z-score |
0.99 |
1 |
8.50 |
0.004 |
| Sex |
0.14 |
1 |
1.20 |
0.30 |
| Treatment (school group) |
0.82 |
2 |
3.54 |
0.030 |
| Sex * school group |
0.08 |
2 |
0.36 |
0.70 |
| Error |
38.39 |
329 |
- |
- |
Zeba et al. Nutrition Journal 2006 5:17 doi:10.1186/1475-2891-5-17 |
||||