1. What is the Weech Formula?

The Weech formula is a simple method to estimate the expected weight of children based on their age in months. It provides a quick reference for pediatric weight assessment and growth monitoring.

2. How Does the Calculator Work?

The calculator uses the Weech formula:

Where:

• \( Age \) — Child's age in months

Explanation: The formula provides a simple linear relationship between a child's age and expected weight, with the constant 4 representing the average birth weight.

3. Importance of Weight Estimation

Details: Accurate weight estimation is crucial for pediatric medication dosing, nutritional assessment, and monitoring growth patterns in children.

4. Using the Calculator

Tips: Enter the child's age in months. The value must be valid (age between 1-120 months).

5. Frequently Asked Questions (FAQ)

Q1: For what age range is the Weech formula applicable?
A: The Weech formula is typically used for children aged 1-5 years (12-60 months).

Q2: How accurate is the Weech formula?
A: While useful for quick estimation, individual variations exist. Always consider actual measurements for clinical decisions.

Q3: Are there other pediatric weight estimation formulas?
A: Yes, other formulas include the Advanced Paediatric Life Support (APLS) formula and the Traub-Johnson formula.

Q4: When should actual weight measurement be preferred?
A: For medication dosing or critical decisions, always use actual measured weight rather than estimated weight.

Q5: How does this formula account for growth variations?
A: The formula provides a population average but doesn't account for individual growth patterns, genetics, or nutritional status.