Normalized varimax rotation was applied to the extracted factors.
Below, we present the profiles of the four extracted factors.
The 12 extracted factors accounted for 53.25% of the total variance.
The name of the extracted factors depends of the items retained for each of them.
These extracted factors include personal constraints, service constraints and liberty constraints as presented in Table 4.
Table 5 displays the factor loadings of the 65 items under the extracted factors.
Our method is also applicable to cross-sectional sufficient regression using extracted factors.
Furthermore, for robust explanatory power, we stipulate that the extracted factors explain at least 50%% of the total cumulative variance.
Table 5 shows the details of the two extracted factors, i.e., pro-auto attitudes and pro-carpooling attitudes.
Factor loading, communalities for each variables, eigen values, percentage of variance and cumulative percent for three extracted factors are given in Table 4.
Also, some papers did not provide a specific section describing factors, and, therefore, we extracted factors from other sections such as lessons learned, discussions, and conclusions.
