iPhone 'Instant Growth Chart Percentile' Calculator updated: http://bit.ly/o65WIH.

In App Store search for Instant Growth Chart.

What's New in this Version 
1. Correct spelling error
2. Set Unit default to English
3. Set Sex default to Female
4. Minor code corrections for unit and sex defaults
5. Added 'Axillary - 35.5-37.0 °C (96-99 °F)' to 'Normal Range of Child Temperature' in Temperature Converter
6. Added Remarks when computed BMI and CDC BMI descriptions do not match.
7. Updated support documentation in website http://appluent.blogspot.com.

iPhone app 'BMI+ CDC Percentile Calculator' has been updated: http://bit.ly/nHBTLX.

In App Store, search for BMI+ CDC.

What's New in this Version
1. Correct spelling error
2. Set Unit default to English
3. Set Sex default to Female
4. Minor code corrections for unit and sex defaults
5. Added 'Axillary - 35.5-37.0 °C (96-99 °F)' to 'Normal Range of Child Temperature' in Temperature Converter
6. Added Remarks when computed BMI and CDC BMI descriptions do not match
7. Updated support documentation in website http://appluent.blogspot.com

Isolated Issues Using Instant Growth Chart Percentile

There are isolated issues during prolonged use of the Instant Growth Chart Percentile app. To resolve the issue, please follow the instructions below:

1. Delete the 'Instant Growth Chart Percentile' app from memory by double tapping the home key
2. Find for the 'Instant Growth Chart Percentile' icon then tap and hold it for a few seconds
3. Once the 'Instant Growth Chart Percentile' icon shows a '-' (negative) on the upper left, touch it again to delete it
4. Once the app is removed from memory, go back to the Instant Growth Chart Percentile app to use it normally.
 

Remarks Regarding BMI and CDC Percentile Descriptions Inconsistencies

There are several combinations of sex, age, height, weight, and BMI values that will result in inconsistent BMI and CDC Percentile descriptions. This is normal. These inconsistencies are common in the lower age ranges.

1.     BMI uses a well defined and established formula:

Metric: Weight in Kilograms / Height in Centimeters / Height in Centimeters * 10000

or

English: Weight in Pounds / Height in Inches / Height in Inches * 703

2.     CDC BMI values their descriptions are based on a series of percentile curves that illustrate the distribution of selected body measurements in children.

As an example:

Sex: Male

Age: 6 years old

Height: 48 inches

Weight: 60 pounds

Results in:

BMI Description: Underweight

CDC BMI Description: Obese 

References:
http://www.cdc.gov/growthcharts/who_charts.htm
http://www.cdc.gov/growthcharts/percentile_data_files.htm

How to Use BMI+ CDC App

Once you purchased and downloaded the 'BMI+ CDC' app from the Apple App Store or iTunes, you can use it to determine BMI percentile data for children and adult ages 2 years and above.

After measuring your or your child’s height and weight, 'touch' the unit (Metric or English) and sex, enter the age, height, and weight. For metric units, use kilogram for weight and centimeter for length. For English units, use pound for weight and inch for length. Enter parameters according to the unit of measurement selected.

To exit the virtual decimal keypad, touch anywhere outside the values entered.

Once satisfied with your entries, touch 'Calc' button to display the results. BMI has alerts to show valid values if you entered out of range values.

Determining BMI Classification

Computed BMI Percentile Data

BMI < 18.5 - Underweight

BMI >= 18.5 and <= 24.99 - Normal Weight

BMI >= 25.0 and <= 29.9 - Overweight

BMI > 30.0 - Obese

CDC Percentile Data

3rd Percentile - Underweight

5th, 10th, 25th, 50th, or 75th Percentile - Healthy Weight

85th or 90th Percentile - Overweight

95th or 97th Percentile - Obese 

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Instant Growth Chart Percentile and BMI+ CDC Apps Comparison

The Instant Growth Chart Percentile app is for infants and children from birth to 20 months. The data is taken from WHO as suggested by CDC. It can classify the child's percentile if underweight, normal, obese, etc. without having to plot the parameters using the WHO charts.

The BMI+ CDC is for children and adults from 2 years old and above. It uses the normal BMI computation and in addition classify that BMI result if underweight, normal, obese, etc.

If you bought the Instant Growth Chart Percentile, you don't need to buy the BMI+ CDC as it is included in the Instant Growth Chart Percentile app.

BMI+ CDC - Body Mass Index (BMI) Percentile Calculator

BMI+ CDC Percentile Calculator http://itunes.apple.com/us/app/bmi-cdc/id463177356?ls=1&mt=8

Description: The 'BMI+ CDC' app has two (2) medical calculators for use by pediatricians, medical assistants, nurses, students, medical billers, and parents.

1. Body Mass Index (BMI) Percentile for Girls and Boys Ages 2 to 20 - The 'BMI+ CDC' app displays the BMI Percentile view that computes for the BMI using a formula. By using the BMI result, you can determine the BMI Percentile that matches data in the BMI SQLite© database. The BMI SQLite© database contains data imported from the Center for Disease Control and Prevention (CDC) spreadsheet.

The resulting BMI in Kg/m², determines the BMI percentile in percent. The BMI percentile data is part of the BMI SQLite© database imported from the CDC .xls files for Body Mass Index (BMI) Percentile for Girls and Boys Ages 2 to 20.

Formula used:
Metric: Weight in Kilograms / Height in Centimeters / Height in Centimeters * 10000
or
English: Weight in Pounds / Height in Inches / Height in Inches * 703

The 'BMI+ CDC' app can also compute BMI in Kg/m² for adults ages > 20 years, but the resulting BMI Percentile results in 'Not Found for 2 to 20 Years Only'. The BMI SQLite© database contains CDC data only for children and adults ages 2 to 20 years.

Source of data: The BMI calculator contains a BMI SQLite© database embedded on the device. The BMI SQLite© database contains data imported from the CDC BMI charts.

2. Temperature Converter is an add-on view to the BMI and BMI for convenience to convert temperature from Celsius to Fahrenheit and vice-versa. It shows normal temperatures for adults and infants.

Visit http://www.appluent.com/bmiplus/bmiplus.htm for more information.

Disclaimer:
The developer’s role in creating the 'BMI+ CDC' app is to provide parents, students, pediatricians, and other medical personnel a way to present BMI Percentile information in a more meaningful medium rather than the hard to plot and interpret paper CDC BMI Percentiles. Overall, your pediatrician is the last call in interpreting the results of the 'BMI+ CDC' app calculator. Furthermore, the developer is not responsible or liable for misuse of the data extracted from this application.

Disclosure:
'BMI+ CDC' app data was imported from the public Center for Disease Control and Prevention (CDC) BMI spreadsheet files. The 'BMI+ CDC' app uses this data to compute for BMI percentile for children and adults from 2 and 20 years as suggested by CDC referencehttp://www.cdc.gov/growthcharts/percentile_data_files.htm. This data is not used for adults above 20 years old. This data is stored in the BMI SQLite database embedded on the device. For ‘Guidelines for Ensuring the Quality of Information Disseminated to the Public’ visithttp://www.cdc.gov/maso/qualitycontrol/Guidelines.htm.

Instant Growth Chart Percentile Calculator

Instant Growth Chart Percentile Calculator
http://itunes.apple.com/us/app/igcp/id459387907?ls=1&mt=8

Description: Instant GCP app has three (3) medical calculators for use by pediatricians, medical assistants, nurses, students, medical billers, and parents.

1. Instant Growth Chart Percentile (Instant GCP) Calculator - Computes growth chart percentile data for girls or boys from birth to 24 months using formulas and data from World Health Organization (WHO) growth charts.

The Instant GCP calculator displays percentile data from the IGCP database that matches the age, sex, height, weight, and head circumference entered. Percentile results include:

a. Length-for-Age
b. Weight-for-Age
c. Head Circumference-for-Age
d. Weight-for-Length

Source of data: The app has a SQLite© database embedded on the device. The IGCP database contains data extracted from the WHO growth charts.

2. Body Mass Index (BMI) Percentile for Girls and Boys Ages 2 to 20 - The BMI portion of the Instant GCP app displays the BMI Percentile view that computes for the BMI using a formula and the IGCP database.

The resulting BMI in Kg/m², determines the BMI percentile. BMI data is part of the IGCP database extracted from the CDC .xls files for Body Mass Index (BMI) Percentile for Girls and Boys Ages 2 to 20.

Source of data: The BMI calculator shares a SQLite© database used by Instant GCP embedded on the device. The IGCP database contains data extracted from the CDC BMI charts.

3. Temperature Converter is an add-on view to the Instant GCP and BMI for convenience to convert temperature from Celsius to Fahrenheit and vice-versa. It shows normal temperatures for adults and infants.

Visit http://www.appluent.com/igcp/makingofigcp.htm for more information.

Disclaimer: The developer’s role in creating the Instant Growth Chart Percentile (Instant GCP) app is to provide parents, students, pediatricians, and other medical personnel a way to present growth chart percentile information in a more meaningful medium rather than the hard to plot and interpret paper growth chart percentiles. Overall, your pediatrician is the last call in interpreting the results of the Instant GCP app calculator. Furthermore, the developer is not responsible or liable for misuse of the data extracted from this application.

Disclosure: Instant GCP data was imported from the public World Health Organization (WHO) growth spreadsheet files. The Instant GCP app uses this data to compute for growth chart percentile for infants and children from birth to 24 months as suggested by Center for Disease Control and Prevention (CDC) reference http://www.cdc.gov/growthcharts/who_charts.htm. CDC BMI data for boys and girls ages 2 to 20 years was also imported from the public CDC spreadsheet referencehttp://www.cdc.gov/growthcharts/percentile_data_files.htm. Both data were stored in the SQLite database embedded on the device. For ‘Guidelines for Ensuring the Quality of Information Disseminated to the Public’ visit http://www.cdc.gov/maso/qualitycontrol/Guidelines.htm.