Table 4 Estimated components of the GAMs for the relationships between snail abundance and sampling month, with corresponding effective degrees of freedom (edf), Chi-square statistic, P-values, and percentage of deviance explained by the models (%DE)
Smoothing effect (s) variable | Number of snails | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Total no. collected | No. harbouring C. daubneyi | No. harbouring F. hepatica | ||||||||||
edf | χ 2 | P | %DE | edf | χ 2 | P | %DE | edf | χ 2 | P | %DE | |
Sampling month | 8.9 | 438.9 | < 0.001 | 78.2 | 6.7 | 76.1 | < 0.001 | 71.9 | 4.1 | 37.5 | < 0.001 | 72.2 |