colleagues

we have been approached by a charity working with visually impaired 
people about carrying out an assessment (on a DHA wide basis) of the 
needs of people with visual impairment. As part of this they (or 
rather their funders!) want to get an estimate of the size of the 
locally visually impaired population.   We are giving some thought to 
how this maybe achieved and wondered whether a variant of modelling 
based on the 'capture recapture' method would be appropriate. I am 
familiar with work done on this for drug using and sex worker 
populations but not any  others

1) do people think this would be a good way to do this 
2) is anybody familiar with using this approach in populations other 
than those noted above

we would also be interested in making contact with a statistician 
familair with using these techniques

thanks 

mark       
Mark Newman
Senior Lecturer: 
School of Health, Biological & Environmental Sciences (HeBES)
Middlesex University
10 Highgate Hill
London N19 3UA
Tel: 0181 362 6627 or 0181 366 6600 ex 5775
Fax: 0181 362 6299
E-Mail: [log in to unmask]


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%