****LAB 12, WEDNESDAY 3/3/2004*****
*****EXPLORATORY ANALYSIS
***Relation between smoking and MI***
 infile id oc age smoke mi using "C:\My Documents\655LDA\LDA Data\infarc.raw" 
save using "C:\My Documents\655LDA\LDA Data\infarc.dta" 

tab smoke mi
cci 26 17 40 117
***See OR<>1****
***Relation between OC use and MI***
tab oc mi
cci 34  9 64 93 
***See OR<>1****
sort mi
 graph7 age, box by(mi) total s(o) ylab
 by mi: summ age

**One sample t-test of the means***
 ttesti 43 37.9 5.08 157 34.1 4.68
**Conclusion: there's a diffrenec between the means

***Logistic regression assuming independent responses*****
logit mi age smoke oc, nolog
***same thing is done by glm mi age smoke oc, f(bin) l(logit)