1. What is Adjusted Age?

Adjusted age (also called corrected age) is a calculation used for premature babies that accounts for their early birth. It represents how old the baby would be if they had been born at full term (40 weeks gestation).

2. How Does the Calculator Work?

The calculator uses the adjusted age formula:

Where:

• \( \text{Chronological Age} \) — Actual age since birth in weeks
• \( \text{Gestational Age} \) — Weeks of gestation at birth (20-40 weeks)

Explanation: The formula subtracts the weeks of prematurity (difference between 40 weeks and actual gestational age) from the chronological age.

3. Importance of Adjusted Age

Details: Adjusted age is important for tracking developmental milestones in premature infants. Most experts recommend using adjusted age until about 2-3 years old for developmental assessments.

4. Using the Calculator

Tips: Enter chronological age in weeks (since birth) and gestational age at birth in weeks (between 20-40 weeks). The calculator will provide the adjusted age in weeks.

5. Frequently Asked Questions (FAQ)

Q1: Until what age should I use adjusted age?
A: Typically until 2-3 years old, though this may vary depending on the degree of prematurity and individual development.

Q2: How does adjusted age affect developmental milestones?
A: Premature babies often reach milestones closer to their adjusted age rather than chronological age, especially in the first 2 years.

Q3: Should I use adjusted age for vaccinations?
A: No, vaccinations should always be given based on chronological age, not adjusted age.

Q4: What's the difference between chronological and adjusted age?
A: Chronological age is time since birth, while adjusted age accounts for prematurity by subtracting the weeks born early.

Q5: How do I convert weeks to months for adjusted age?
A: Divide weeks by 4.345 to get months (since months aren't exactly 4 weeks). Our calculator provides results in weeks for precision.