What is Corrected Gestational Age?
Corrected gestational age (CGA) calculates a preterm baby's developmental age by adjusting for their early birth. This calculator helps parents and healthcare providers track milestones accurately by accounting for prematurity. Essential for assessing growth, vaccination schedules, and developmental progress, CGA ensures age-appropriate expectations for preterm infants up to 24 months adjusted age.
Calculate Corrected Age
Calculation Formula
CGA = Chronological Age - (40 Weeks - Gestational Age at Birth). For example, a baby born at 28 weeks (12 weeks early) who is 16 weeks old has CGA of 4 weeks.
How to Use
Enter baby's birth date and original due date. Our calculator automatically determines prematurity duration and calculates adjusted age. Use results to track developmental milestones, vaccination schedules, and growth patterns accurately. Always consult pediatricians for medical decisions.
Reference Table
| Weeks Premature | Adjustment Period |
|---|---|
| 4 Weeks | First 4 months |
| 8 Weeks | First 8 months |
| 12 Weeks | First 12 months |
Pros and Cons
Advantages:
- Accurate developmental tracking
- Better growth assessment
- Improved medical care planning
Disadvantages:
- Not useful after 2 years
- Doesn't account for individual variations
FAQs
When to stop using CGA?
Most experts recommend using corrected age until 2-3 years. After this, chronological age becomes more relevant for developmental assessments.