NP AIC BIC Log-L D χ2 Df p-value
Null model 2 671 683 -334 667
Model 2 3 668 685 -331 662 5.39 1 0.020*
Model 1 7 407 448 -197 393 268.21 4 <0.001*
Model 3 8 405 452 -195 390 3.78 1 0.052