aBIC and LMR

[Umesh Raj Aryal]

Hello

I am working on as Statistician at Nepal Health Research Council in Nepal. I use to tidyLPA to perform latent class design for Likert scale questions. I have 34 questions. Using  these questions, i am able to unable to compute aBIC and  Vuong–Lo–Mendell–Rubin likelihood ratio test (LMR). Though I googled it several times but unable to get any information on aBIC. For LMR, Everywhere i found the same example  below and  I did not understand how these values were computed. 

calc_lrt(n, null_ll, null_param, null_classes, alt_ll, alt_param, alt_classes)

calc_lrt(150L, -741.02, 8, 1, -488.91, 13, 2)

Below is the outcome from my study. 

Model Classes AIC      BIC      Entropy prob_min prob_max n_min n_max BLRT_p

1     2       19681.05 20029.65 0.96    0.99     0.99     0.40  0.60  0.01  

Now, i would like to know how these values can be applied in calc_lrt. Next,  i am also looking  for command to compute aBIC.

Thank you and waiting for your positive response.

Dr. Umesh Raj Aryal

Statistician

Nepal Health Research Council

Kathmandu, Nepal