Need Help Calculating Age in Months

[Tim Hardison]

I need to be able to calculate age in months, and round whatever remainder to the middle of the month (.5). I am calculating z-scores and percentiles for a childhood obesity project. The DOB and Date of measurements must be used to calculate months, converted to read anything from 142.0 to 142.9 as 142.5. This value will be used to look up the the appropriate LMS (Box Cox, Median, and Standard Deviation) in another excel table. I have to be able to compute age in months so 142.5, 143.5, 144.5, 144.5 etc. It is just not rounding off to the nearest half month. I used one help file to be able to calculate in months, but all the remainders came out as .00. I know it is more complicated that this, but have no clue how to do it. Can anyone help?

[shg]

Duplicate post, thread closed.