5.3.3. Empirical results
The results of the two ordered probit models are presented inTables 6 and 7. The models Likelihood Ratio Chi-square coefficients(41.40 with 26 degrees of freedom and 51.72 with 24 degreesof freedom) are statistically significant at 0.05 and 0.01 level ofprobability respectively. This outcome leads us to reject the nullhypothesis that all the predictors’ regression coefficients in eachmodel are simultaneously equal to zero. The two models furtherfulfill the parallel lines assumption at the 0.05 significance level.In each model, a test of whether the levels can be distinguished yields significant differences in the model’s cut points at the 95%confidence interval. The goodness of fit of the models is assessedusing the McKelvey and Zavoina’s R2(R2mz). This R2is more pre-ferred since it has no bias regardless of the number of categoriesfor the dependent variable. Furthermore, the R2mzvalues of 0.18and 0.21 in the adoption and perception models respectively areacceptable within cross-sectional studies (Veall and Zimmermann,1992).