DATEDIFF, Calculate Age, Issue for Age less than one Year .

[yalomari]

Hi Dears , 

I'm trying to calculate the age of the patient's list (what his/her Age was on the exam Date ) , using DAX 
DOB = birthdate
ExamDate = ExamDate

so the code was 

DATEDIFF('TableName'[DOB],[ExamDate],YEAR)

So, I have a case that 

DOB= 20-DEC-2022

ExamDate = 02-AUG-2023

The expected result is = 0 because this age must be 8 months, but it returns 1 instead 

Does anyone have a clue why and how to solve this? 

[eliasayyy]

due to it bein 8 months , it will round up hence the one