difference between adjusted age and chronological age for premature babies
âBabies who are born prematurely often have two ages: Chronological age is the age of the baby from the day of birthâthe number of days, weeks or years old the baby actually has been in the outside world. Adjusted age is the developmental age of the baby based on his due date. To calculate adjusted age, you take your premature babyâs chronological age (for example, 20 weeks) and subtract the number of weeks premature the baby was (born 6 weeks early). In this example, the babyâs adjusted age would be 14 weeks.