*Generate weight
               gen wt=v005/1000000

*generate age in months variable
               gen agemo = v008 - b3
               label variable agemo "Age of child in months or months since birth"


****Tetanus****
*two injections alst pregnancy
               gen tet2lastp = 0 
               replace tet2lastp =1 if m1 >1 & m1<8
               label var tet2lastp "Had 2 or more tetanus shots during last pregnancy"

/*New variable includes mothers with two injections during the pregnancy of their last birth or two or
more injections (the last within 3 years of the last live birth), three or more injections (the
last within 5 years of the last birth), four or more injections (the last within 10 years of the
last live birth), or five or more injections at any time prior to the last birth.*/
*variables used: m1 is total tet injections during the most recent pregnancy
*m1a is total tet injections before the pregnancy
*m1e is the data in CMCs of last injection before pregnancy, may be m1d like in nepal

**Full tetanus
*first calculate total tetanus shots

               g totet=0 
               g ttprotect = 0 
               
               replace totet=m1 if m1>0 & m1<8
               replace totet= m1a + totet if (m1a > 0 & m1a < 8)
               label val totet yesno
               
               *now generating variable for date of last injection - will be 0 for women with at least 1 injection at last pregnancy
               *use b19, new CDC age var
               g lastinj= 9999
               replace lastinj = 0 if m1>0 & m1 <8
               gen int age = (agemo)/12 
               replace lastinj = m1d - age if m1d <20 & (m1==0|(m1>7 & m1<9996)) // years ago of last shot - (age at of child), yields some negatives

               *now generate summary variable for protection against neonatal tetanus 
               replace ttprotect = 1 if tet2lastp ==1 
               replace ttprotect=1 if totet>=2 &  lastinj<=2 //at least 2 shots in last 3 years
               replace ttprotect=1 if totet>=3 &  lastinj<=4 //at least 3 shots in last 5 years
               replace ttprotect=1 if totet>=4 &  lastinj<=9 //at least 4 shots in last 10 years
               replace ttprotect=1 if totet>=5  //at least 2 shots in lifetime
               *replace ttprotect=0 if ttprotect==. 
               lab var ttprotect "Full Neonatal Tetanus Protection"
               
               ta ttprotect if bidx==1 [iw=wt]