Table 2.
Results of Ordinary Least Square models predicting the rate of change on the logarithm of the number of plant uses reported.
| Model 1 | Model 2 | Model 3 | ||||
|---|---|---|---|---|---|---|
| Coef | CI | Coef | CI | Coef | CI | |
| Year 2009 | −0.204*** | (−0.293, −0.114) | −.181*** | (−0.267, −0.094) | −.203*** | (−0.308, −0.099) |
| Age | 0.009** | (0.003, 0.015) | ^ | ^ | .008 | (0.002, 0.018) |
| Age square | −0.0001* | (−.0001, −0.00001) | ^ | ^ | −.00001 | (−0.0002, 0.00005) |
| Male | 0.035 | (0.010, 0.080) | .035 | (0.009, 0.079) | .035 | (0.009, 0.079) |
| Maximum education level | 0.007 | (−0.001, 0.014) | .007 | (−0.0004, 0.014) | .007* | (−0.0002, 0.014) |
| Spanish | 0.039 | (−0.013, 0.090) | .037 | (−0.012, 0.087) | .036 | (−0.013, 0.086) |
| Remoteness | 0.118*** | (0.087, 0.149) | .119*** | (0.086, 0.152) | .118*** | (0.084, 0.151) |
| Interviewed twice | 0.005 | (−0.044, 0,054) | .001 | (−0.047, 0,049) | .001 | (−0.049, 0,047) |
| Decade of birth (1920 excluded category) | ||||||
| 1930s | ^ | ^ | −.0.094 | (−0.228, 0.039) | −.0.099 | (−0.258, 0.059) |
| 1940s | ^ | ^ | −.0.032 | (−0.171, 0.107) | −.0.037 | (−0.265, 0.190) |
| 1950s | ^ | ^ | −.0.071 | (−0.184, 0.042) | −.0.064 | (−0.318, 0.191) |
| 1960s | ^ | ^ | −.0.047 | (−0.158, 0.063) | −.0.012 | (−0.315, 0.291) |
| 1970s | ^ | ^ | −.0.077 | (−0.195, 0.040) | −.0.005 | (−0.352, 0.341) |
| 1980s | ^ | ^ | −.0.153** | (−0.273, −0.034) | −.0.046 | (−0.423, 0.332) |
| R2 | 0.418 | 0.421 | 0.423 | |||
| N | 1151 | 1151 | 1151 | |||
Coef: Coefficient, CI: Confidence Interval.
*
P ≤ 0.05
**
P ≤ 0.01
***
P≤ 0.001. Ordinary least squares regressions with clustering by village of residency.
^
=variable intentionally omitted.