1. What is Adjusted Age Calculation?

The adjusted age calculation accounts for prematurity by subtracting the weeks of prematurity from the chronological age. This provides a more accurate developmental age assessment for preterm infants.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• Chronological Age — Actual time since birth
• Prematurity Adjustment — Time born before due date (typically calculated as 40 weeks - gestational age at birth)

Explanation: The adjustment accounts for the developmental time the infant missed by being born early.

3. Importance of Adjusted Age

Details: Adjusted age is crucial for proper developmental assessment and milestone tracking in preterm infants, especially in the first 2-3 years of life.

4. Using the Calculator

Tips: Enter chronological age in years (can use decimals for months) and prematurity adjustment in years. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Until what age should prematurity be adjusted?
A: Typically until 2-3 years chronological age, though this depends on the degree of prematurity and individual development.

Q2: How do I calculate prematurity adjustment?
A: Convert weeks premature to years (e.g., 8 weeks premature = 8/52 = ~0.15 years).

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

Q4: How does this differ from gestational age?
A: Gestational age is time since conception, while adjusted age is chronological age minus prematurity.

Q5: When is adjusted age most important?
A: Most critical in the first year, especially for assessing motor and cognitive development milestones.