 

% 14.12.   Psychosis in Adopted Children. Numerous studies have been done to
% determine the etiology of schizophrenia. Such factors as biological, psychocultural,
% and sociocultural influences have been suggested as possible
% causes of this disorder. To test if schizophrenia has a hereditary component,
% researchers compared adopted children whose biological mothers
% are schizophrenic (“exposure”) to adopted children whose biological
% mothers are normal (“nonexposure”).
% Furthermore, the child-rearing abilities of adoptive families have been
% assessed to determine if there is a relationship between those children
% who become psychotic and the type of family into which they are
% adopted. The families are classified as follows: healthy, moderately disturbed,
% and severely disturbed.
% The following data are from an experiment described in Carson and
% Butcher (1992).
% Type of Adoptive Family
% Healthy Moderately Disturbed Severely Disturbed
% Diagnosis Exp Nonexp Exp Nonexp Exp Nonexp
% None 41 42 11 26 6 15
%Psychotic 10 11 18 25 38 28
tables=[41 42; 10 11; 11 26; 18 25; 6 15; 38 28];
table =[41 + 11+ 6    42+26+15;  10+18+38   11+25+28];

[chi2 pval]=mantelhaenszel(tables)

% chi2 =3.0110
% pval =  0.0827

 [chi2, pvalue, expected, assoc ] =tablerxc(table)
 
%  
% chi2 =2.5296
% pvalue =0.1117
% expected =
%    64.5166   76.4834
%    59.4834   70.5166
% assoc = 
% 
%     phi: 0.0966
%       C: 0.0962
%       V: 0.0966

 
 
 
 
