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mvogel78 / childsds

Calculation of standard deviation scores adduced from different growth standards (WHO, US, UK, Germany, Italy, China, etc). Therefore, the calculation of SDS-values for different measures like BMI, weight, height, head circumference, different ratios, etc. are easy to carry out. Also, references for laboratory values in children are available: serum lipids, iron-related blood parameters.
https://github.com/mvogel78/childsds/wiki/List-of-Reference-Tables-by-Item
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Correction for preterm infants #5

Open zxy1219 opened 4 years ago

zxy1219 commented 4 years ago

How to set up the correction for preterm infants when calculating SDS or percentile? It seems that we can use the kro.ref. Can you provide a example code? Or shall we set the age of preterm infants as negative values?

RobbieRECAP commented 4 years ago

Hi, I'm not the developer but have used the childsds and kro.ref to calculate Z scores for preterms. I had my gestational age value in weeks so I did (Data$Gestational_Age - 40)/ 52. This gets the age values of your preterms into a negative value in years that childsds can then use.