Hello Epidata users, I am having problem to code conditional formula in

epidata as described below, can anyone suggest how to code to the following condition,

I think the problem is that you should use more parenthesis. Is this in analysis or in entry ?

I assume analysis:

* first create the integer variable k: define k # * or you could use the gen statement: "i" makes this an integer variable gen i k = 0

* give labels labelvalue k /0="No" /1="Yes" /9="Missing" /8="Not recoded"

* now for certain conditions change exposure to "no" or yes: * I just give different examples * first I give all the value 8 to make sure I am in control of the recoding: k = 8 If ( (a= 1) and (b = 1)) then exposure= 0 If ( (f = 1) ) then exposure= 9 If ( (a= 1) and (b = 1) and (c = 1) and (d = 1) ) then exposure= 1 tab k * if any records are stille with the value 8, then you would know there is a problem.

regards Jens Lauritsen EpiData Association