1. What is Chronological and Adjusted Age?

Chronological age is the actual time elapsed since birth. Adjusted age accounts for prematurity or other factors by subtracting an adjustment period from the chronological age.

2. How Does the Calculator Work?

The calculator uses these equations:

Where:

• \( Current\ Date \) — The date to calculate age at
• \( Birth\ Date \) — The person's date of birth
• \( Adjustment\ Factor \) — Number of years to subtract (often used for prematurity)

Explanation: The calculator first determines the exact time between birth date and current date, then subtracts the adjustment period to calculate adjusted age.

3. Importance of Age Calculation

Details: Accurate age calculation is crucial for developmental assessments, especially in premature infants where adjusted age provides a better measure of expected development.

4. Using the Calculator

Tips: Enter birth date, current date (defaults to today), and adjustment factor in years. All values must be valid (birth date before current date).

5. Frequently Asked Questions (FAQ)

Q1: When should I use adjusted age?
A: Adjusted age is typically used for premature infants until about 2-3 years chronological age to account for their early birth.

Q2: How is the adjustment factor determined?
A: For prematurity, it's typically the number of weeks early (e.g., 8 weeks early = 2 month adjustment).

Q3: What's the maximum adjustment factor?
A: There's no strict maximum, but adjustment factors greater than the chronological age will result in negative adjusted ages.

Q4: Can this be used for gestational age?
A: Yes, by using the due date as the "birth date" and adjusting the current date accordingly.

Q5: How precise is the calculation?
A: The calculation is exact down to the day level, accounting for leap years and varying month lengths.