Table S1.
Read codes indicating ASDs
| Read code description | |
|---|---|
| ASDs | |
| E140.00 | Infantile autism |
| E140000 | Active infantile autism |
| E140100 | Residual infantile autism |
| E140.12 | Autisma |
| E140.13 | Childhood autism |
| E140000 | Active infantile autism |
| E140z00 | Infantile autism NOS |
| Eu84000 | [X]Childhood autism |
| Eu84011 | [X]Autistic disordera |
| Eu84012 | [X]Infantile autism |
| Eu84100 | [X]Atypical autism |
| Eu84z11 | [X]ASD |
| Asperger’s syndrome | |
| Eu84500 | [X]Asperger’s syndromea |
| PDD | |
| Eu84.00 | [X]PDDs |
| Eu84y00 | [X]Other PDDs |
| Eu84z00 | [X]PDD; unspecified |
Note:
a
Indicates Read codes most frequently used by GPs to indicate ASD in the CPRD.
Abbreviations: ASD, autism spectrum disorder; CPRD, Clinical Practice Research Datalink; GPs, general practitioners; NOS, not otherwise specified; PDD, pervasive developmental disorder.