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Midparental Height

Aka: Midparental Height, Calculation of Growth Delay, Calculation of Growth Excess

See Also
Step 1: Calculate Final Height prediction (mid-parental height)
1. Boy
  1. In: (Father's Height + Mother's Height + 5) / 2
  2. Cm: (Father's Height + Mother's Height + 13) / 2
2. Girl
  1. In: (Father's Height - 5 + Mother's Height) / 2
  2. Cm: (Father's Height - 13 + Mother's Height) / 2
Step 2: Identify Predicted Growth Percentile
1. Use above predicted mean height to mark growth chart
  1. Mark chart at 18-20 year old mark
  2. Mark Confidence Intervals
    1. Mean Height in inches +/- 2 inches (some use 3.3 inches)
    2. Mean Height in centimeters +/- 5 centimeters (some use 8.3 cm)
2. Identify growth percentiles for the predicted height
Step 3: Indications for growth evaluation
1. Child over age 24 months should fall into above percentiles
  1. Growth should at least parallel the 3rd or 97th percentile line
2. Pursue growth evaluation for any child below minimum or above maximum

Family Practice Notebook

Patients should address specific medical concerns with their physicians.

Although access to this page is not restricted, the information found here is intended for use by medical providers.

This page was written by Scott Moses, MD, last revised on 11/1/2008 and last published on 5/14/2013.

This is one of 5887 pages in the Family Practice Notebook