1. What is Corrected Gestational Age?

Corrected gestational age accounts for prematurity by adjusting the infant's age based on how early they were born. It's used to assess growth and development in premature infants until about 2 years of age.

2. How Does the Calculator Work?

The calculator uses the corrected age formula:

Where:

• \( Gestational Age \) — Total weeks of pregnancy at assessment
• \( Weeks at Birth \) — Weeks of gestation when baby was born
• 40 — Standard full-term gestation period

Explanation: The formula adjusts the chronological age by subtracting the weeks of prematurity (40 minus weeks at birth).

3. Importance of Corrected Age

Details: Corrected age provides a more accurate assessment of a premature infant's development compared to chronological age, helping identify true developmental delays.

4. Using the Calculator

Tips: Enter gestational age in weeks (current or at assessment), weeks at birth (gestational age at delivery). Both values should be between 20-45 weeks.

5. Frequently Asked Questions (FAQ)

Q1: Until what age should corrected age be used?
A: Typically until 2 years chronological age, though this may vary based on degree of prematurity.

Q2: How does corrected age affect developmental milestones?
A: Premature infants often reach milestones closer to their corrected age rather than chronological age.

Q3: Should growth charts use corrected age?
A: Yes, growth parameters should be plotted according to corrected age for premature infants.

Q4: What's the difference between chronological and corrected age?
A: Chronological age is time since birth; corrected age adjusts for prematurity.

Q5: How does extreme prematurity affect corrected age calculations?
A: The more premature the infant, the greater the difference between chronological and corrected age.