
Factor analysis with Call: fa(r = DT, nfactors = 4, rotate = "promax", fm = "pa")

Test of the hypothesis that 4 factors are sufficient.
The degrees of freedom for the model is 249  and the objective function was  0.6 
The number of observations was  17073  with Chi Square =  10228.68  with prob <  0 

The root mean square of the residuals (RMSA) is  0.03 
The df corrected root mean square of the residuals is  0.03 

Tucker Lewis Index of factoring reliability =  0.908
RMSEA index =  0.048  and the 10 % confidence intervals are  0.048 0.049
BIC =  7802.12
 With factor correlations of 
      PA1   PA2  PA4   PA3
PA1  1.00  0.60 0.63 -0.16
PA2  0.60  1.00 0.33 -0.19
PA4  0.63  0.33 1.00  0.04
PA3 -0.16 -0.19 0.04  1.00
