Changes in C+/H before and after treatment (Δ C+/H) in the two kinds of treatments, and the two way analysis of variance (ANOVA) results for the effect of each treatment
| Two way ANOVA | ||||||
|---|---|---|---|---|---|---|
| Treatment (effect) | Δ C+/H | (95% CI) | n | df | F | p |
| *To evaluate the basal effect C+/H as covariant, an analysis of covariance of Δ C+/H among the four groups was performed. It showed a significant difference between them: F=9.88, p<0.0005, with a Tukey test between Education and Control of p<0.0001. 95% CI= confidence intervals, n=number of cases, df=degrees of freedom, F=Fisher's parameter for ANOVA, p=for F. | ||||||
| Education (Blocks C and D) | −0.53 | (−0.8 to −0.25) | 96 | 183 | 8.4 | 0.004 |
| Chemicals (Blocks A and C) | −0.18 | (−0.53 to +0.18) | 95 | 183 | 0.38 | 0.53 |
| Control (Block B) | +0.133* | (−0.4 to +0.67) | 45 | |||
| Interaction | 183 | 6.51 | 0.01 | |||