Posted by
Maguin, Eugene on
Mar 26, 2012; 9:37pm
URL: http://spssx-discussion.165.s1.nabble.com/Analysis-of-data-of-a-Randomized-Control-trial-tp5593483p5596462.html
I'm going to assume that you are going to analyze each variables separately. I'm going to assume your sample sizes are 'sufficient' and your data are appropriate to the assumptions of the following analysis methods.
You have two options. One is a repeated measures analysis using GLM and which makes the standard assumptions regarding repeated measures data. The other is using Mixed. Within mixed, you have two suboptions (and maybe more). One is a growth model in which you assume that each person's data can be fit with some sort of curve, which might include a straight line. The other suboption is to fit a repeated measures model. Certain others are more knowledgeable commentators than I am.
I don't know if you can obtain this book but Judith Singer's recent book on mixed/multilevel/growth models would be very helpful reading for working your analyses.
Gene Maguin
-----Original Message-----
From: SPSSX(r) Discussion [mailto:
[hidden email]] On Behalf Of drakshmamc2811
Sent: Sunday, March 25, 2012 12:27 PM
To:
[hidden email]
Subject: Analysis of data of a Randomized Control trial
I had conducted a RCT on the effect of zinc Supplementation on diarrhoea and
growth. My study included a follow up of five months in which i collected
data for "Number of Episodes of Diarrhoea" every month and measured the
Height and Weight of the study subjects every month.
Now finally I have a data were i have number of episodes per month for five
month for each subject and the height and weight of each subjects for five
months.
I had recorded the baseline height and weight and baseline for diarrhoea
episodes was considered to be zero.
Can anyone please help on how i should proceed with the analysis of this
data and how should i go about it in SPSS
Looking forward for a speedy response
Regards
Dr Akash Malik
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