## When adjusting age for prematurity, do you round up or down to obtain gestational age in weeks?

For example, if a child is born at 33 weeks, 5 days, is the child born at 33 weeks gestation or 34 weeks gestation?

Mark E. Ting  
Dec 18, 2018

The developers recommend to round the number of weeks up for 4 or more days and to round down for 3 days or less. In your example, 33 weeks, 5 days would be rounded to 34 weeks gestation. A child born at 33 weeks, 3 days would be rounded down to 33 weeks gestation.

#### Tags
[ASQ-3(195)](https://support.agesandstages.com/kb/tag/138) [ASQ:SE-2(123)](https://support.agesandstages.com/kb/tag/143) [prematurity(10)](https://support.agesandstages.com/kb/tag/159) [age adjustment(6)](https://support.agesandstages.com/kb/tag/177)