[R] Structural equation models with R

[André TavaresCorrêa Dias]

Dear John,
Thanks very much! I don’t know how I didn’t see this before. I checked a 
thousand of times....
There is one more thing that I can not understand. What are the possible 
reasons for problems on calculation of confidence interval for RMSEA? For the 
same model I sent before (after correction of the variable name) the lower CI 
output was NA:

Model Chisquare =  10.824   Df =  13 Pr(>Chisq) = 0.62558
 Goodness-of-fit index =  0.91656
 Adjusted goodness-of-fit index =  0.76895
 RMSEA index =  0   90 % CI: (NA, 0.15652)
 BIC =  -60.425

I have other models with the same behavior, even when the estimative of RMSEA 
is different from zero.

Model Chisquare =  15.165   Df =  14 Pr(>Chisq) = 0.367
 Goodness-of-fit index =  0.89038
 Adjusted goodness-of-fit index =  0.71811
 RMSEA index =  0.053558   90 % CI: (NA, 0.19141)
 BIC =  -61.564

Thanks and all the best.
André

-------------------------------
André Tavares Corrêa Dias
Laboratório de Ecologia Vegetal
Departamento de Ecologia - IB
Universidade Federal do Rio de Janeiro
Ilha do Fundão, CCS
Rio de Janeiro, RJ. Brasil
CEP 21941-590    CP 68020
Tel. (21)2562-6377