[R] HOW to determine the number of components of the mixture model stratfied by age

[lybaomc]

DOES NOBODY KNOW?
HELP!

lybaomc wrote:
> 
> Hi,all
> 
>     with my data,there are more than 1000 quantitative results of antibody
> concentrations, there may be 2 components(positive and negative), or 3
> components (may be strong positive, positive, and negative), or 4-6
> components. Could you tell me how to determine the number of components of
> the mixture model? the  "anova.mix" in mixdist of the R software seems not
> work. 
>  
>     my data is a little complicated(TABLE ), there are more than 1000
> quantitative results of antibody concentrations stratified by age.The
> overall density of results at age j, Fj, is a mixture of the component
> densities, so if there are 5 age groups, then there will be 5 mixture
> models. Do i have to analyse each stratum respectively?
>  
> TABLE
> ------------------------
> age  Bin   length   freq  
> ------------------------
>     1     1     19.75     4         
>     1     2     21.75    10           
>              …………
>     1    12    41.75    36           
>              ………… 
> ------------------------
>     2     1     19.75     4       
>     2     2     21.75    10            
>              …………
>    2    12    41.75    36   
>              ………… 
>  -----------------------
> 
> appreciated
> 
> lybao
> 

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