Table 8.
Generalized linear Model (GLM) showing the effect of selected independent variables on the number of medicinal plants used and the collection frequency of wild yam (n = 250) in rural villages of the Mahafaly region in SW-Madagascar
| Independent variable | Number of medicinal plants used | Frequency of yam collection (Frequency month- 1 ) | ||||
|---|---|---|---|---|---|---|
| B* | P | r | B | P | R | |
| Education level | −0.087 | .029 | −0.083 | −0.249 | 0.008 | −0.118 |
| Tropical livestock unit | −0.007 | .038 | −0.192 | −0.460 | 0.000 | −0.263 |
| Agricultural harvest | −0.127 | .002 | −0.270 | −0.251 | 0.012 | −0.229 |
| Age | 0.002 | .217 | 0.119 | −0.014 | 0.000 | −0.209 |
| Family size | 0.027 | .001 | 0.119 | 0.056 | 0.003 | 0.092 |
| Gender | 0.125 | .029 | 0.128 | 0.153 | 0.232 | 0.124 |
| Healer consultancy | −0.472 | .000 | −0.380 | - | - | - |
| Households activities | - | - | - | 0.053 | 0.550 | 0.038 |
(*) Beta coefficient; (r) regression coefficient, (−) the variable was not included in the model.