Gaining and Growing: Assuring Nutritional Care of Preterm Infants in the Community

Calculating Corrected Age



Assessment of growth, feeding skills, and development should be based on a corrected age for preterm infants. Use of the actual date of birth to calculate age will lead to inappropriate assessment and recommendations. Parents report that health professionals frequently fail to take prematurity into account. Please see section on what parents say about things that were not helpful.


Calculating Corrected Age (CA) from Chronological Age (CH)

CA = CH - # weeks or months premature



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Page reviewed: March 24, 2015