Corrected age calculator for premature babies

For doctors and health professionals

A tool to support the clinical decisions of doctors and health professionals, not for self-diagnosis or self-treatment.

This calculator is inside the patient's file in Clinicato: open it from "Medical tools" while you chart the visit, it fills in from the patient's details and vital signs where they are recorded, and adds its result to the visit's plan in one tap, with the "Medical tools" add-on. Try it in your clinic

Calculator

Medical note: The result supports a clinical decision, it does not replace the doctor's judgement or examining the patient, and is to be checked against your reference before any treatment decision.

How it works and when to use it

Corrected age is the chronological age minus the weeks the baby was born before 40 weeks, and until the original due date the postmenstrual age (PMA) is used instead.

Corrected age is used to assess growth and development in babies born before 37 weeks, usually up to 3 years of age, by the AAP definitions.

Reference: Engle WA, AAP Committee on Fetus and Newborn. Age terminology during the perinatal period. Pediatrics 2004;114:1362-4

Frequently asked questions

Are vaccines given by corrected age?

No, vaccines are mostly given by chronological age, corrected age is for growth and development.

Until when is corrected age used?

Usually until 2 to 3 years, when the effect of an early birth on growth comparisons fades.

All medical tools

Clinic software for this specialty

Try Clinicato for your clinic

These calculators are free here for everyone, and in Clinicato 49 medical tools work inside the patient's file with the "Medical tools" add-on: filled from the visit and the vital signs, with the result added to the visit's plan, next to appointments, prescriptions and invoices.

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