Hello, I posted a question earlier today, but didn't get any reply. So I'm trying to rephrase my question for an answer. I've merged 2 datasets based on their ID number. There were 658 matched and 94 non-matched participants, so I had to delete the 94 participants from my final analyses. However, if I want to see if there is any significant difference between the 2 groups who were included (658) and not included (94) in the final analysis, how can I do that? I need to check the difference for some variables, say, if there is any difference in the gender, parity, maternal age between the 2 groups or not? I've been told to do ch-square analysis between the 2 groups for different variables, but I'm not sure how to do that. Can someone please help me? Thanks.

Fahmida