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Table 2 The numbers and percentages of women with learning disabilities with each Read code.

From: Women with learning disabilities and Read coding: Lessons from a cohort study

Read Code Definition Number of women (n = 290)
Unknown Code has not been given 70 (24%)
Eu81z Learning Disabilities 23 (8%)
E3 Mental Retardation 79 (27%)
E30 Mild Mental Retardation 4 (1%)
E311 Severe Mental Retardation 8 (3%)
PJ0/PJ0z Down's Syndrome 41 (14%)
C301 Phenylketonuria 16 (6%)
E140 Autism 1 (0.005%)
Eu842 Rett's Syndrome 1 (0.005%)
E3 + Another Code Two codes have been given with E3 as the main code 16 (6%)
Eu81z + Another Code Two codes have been given with Eu81z as the main code 31 (11%)