#  Antidepressant data (Janicak et al., 1988) for meta analysis example:

study  x_i   n_i  \hat{p}_i = x_i/n_i

1  20  20  1.00 
2   4  10  0.40 
3  11  16  0.69 
4  10  19  0.53 
5   5  14  0.36 
6  36  46  0.78 
7   9  10  0.90 
8   7   9  0.78 
9   4   6  0.67 

total  106  150  0.71