Table 1 Classification categories from 1985, 1995, 2007, and 2017 studies.

From: Genetics and pediatric hospital admissions, 1985 to 2017

Category number

Category code

Category name

Examples

1

Chr

Chromosomal conditions

Trisomy 21, chromosome deletions

2

AR

Autosomal recessive conditions

Cystic fibrosis, thalassemia

3

XL

X-linked conditions

Duchenne muscular dystrophy, hemophilia

4

AD

Autosomal dominant conditions

Crouzon syndrome, neurofibromatosis type 1

5

MF

Multifactorial conditions

Autism, spina bifida

6

NG

Nongenetic conditions

Trauma, infections, prematurity