5 time points

Comparing to Mplus

FIVE TIME POINTS, ALL DATA, 2 CLASSES

Mplus output (check log-likelihood)

##   Mplus.version      Title AnalysisType   DataType Estimator Observations
## 1           8.2  2 classes      mixture INDIVIDUAL       MLR          739
##   NGroups NDependentVars NIndependentVars NContinuousLatentVars
## 1       1              5                0                     0
##   NCategoricalLatentVars Parameters        LL LLCorrectionFactor      AIC
## 1                      1         31 -2080.996             1.2423 4223.992
##        BIC    aBIC Entropy T11_KM1Starts T11_KM1Final T11_KM1LL
## 1 4366.756 4268.32    0.36            20            4 -2109.764
##   T11_VLMR_2xLLDiff T11_VLMR_ParamDiff T11_VLMR_Mean T11_VLMR_SD
## 1            57.537                 16         67.31      61.811
##   T11_VLMR_PValue T11_LMR_Value T11_LMR_PValue
## 1          0.4083        56.998         0.4126
##              BLRT_RequestedDraws BLRT_KM1AnalysisStarts
## 1                         Varies                     20
##   BLRT_KM1AnalysisFinal BLRT_KM1GenStarts BLRT_KM1GenFinal BLRT_KGenStarts
## 1                     4                 0                0              40
##   BLRT_KGenFinal BLRT_KM1LL BLRT_2xLLDiff BLRT_ParamDiff BLRT_PValue
## 1              8  -2109.764        57.537             16           0
##   BLRT_SuccessfulDraws     AICC       Filename
## 1                   49 4226.798 c2_2_class.out

poLCA output (what we’re using; check log-likelihood)

## Conditional item response (column) probabilities,
##  by outcome variable, for each class (row) 
##  
## $x6c_6_2
##            Pr(1)  Pr(2)  Pr(3)  Pr(4)
## class 1:  0.2168 0.3757 0.0802 0.3273
## class 2:  0.4432 0.2901 0.0977 0.1690
## 
## $x6c_16_1
##            Pr(1)  Pr(2)  Pr(3)  Pr(4)
## class 1:  0.0507 0.5344 0.1168 0.2981
## class 2:  0.4514 0.2210 0.1047 0.2229
## 
## $x7c_8_3
##            Pr(1)  Pr(2)  Pr(3)  Pr(4)
## class 1:  0.0000 0.5323 0.1208 0.3469
## class 2:  0.4301 0.2356 0.1485 0.1858
## 
## $x7c_12_2
##            Pr(1)  Pr(2)  Pr(3)  Pr(4)
## class 1:  0.1208 0.4010 0.0732 0.4049
## class 2:  0.6154 0.0422 0.0329 0.3095
## 
## $x8b_6_2
##            Pr(1)  Pr(2)  Pr(3)  Pr(4)
## class 1:  0.1638 0.2246 0.1820 0.4295
## class 2:  0.4050 0.1219 0.1465 0.3267
## 
## Estimated class population shares 
##  0.4223 0.5777 
##  
## Predicted class memberships (by modal posterior prob.) 
##  0.4291 0.5709 
##  
## ========================================================= 
## Fit for 2 latent classes: 
## ========================================================= 
## number of observations: 755 
## number of fully observed cases: 31 
## number of estimated parameters: 31 
## residual degrees of freedom: 724 
## maximum log-likelihood: -2080.996 
##  
## AIC(2): 4223.992
## BIC(2): 4367.42
## G^2(2): 183.9775 (Likelihood ratio/deviance statistic) 
## X^2(2): 1663.572 (Chi-square goodness of fit) 
##

4 time points

4 time points, students that have at least one response each year