It sounds like this is what you want:
% Create some fake data to use as an example,
% with 3 groups of different sizes;
score1 = randi(2,44,1) - 1; % 1 = true, 0 = false
score2 = randi(2,66,1) - 1;
score3 = randi(2,77,1) - 1;
% Make some vectors to code the groups
cod1 = 0*score1 + 1;
cod2 = 0*score2 + 2;
cod3 = 0*score3 + 3;
codes = [cod1; cod2; cod3];
scores = [score1; score2; score3];
[t, chisq, p] = crosstab(codes,scores)
