The effect of neonatal hypothyroidism and low family income on intellectual disability: A population-based cohort study.

ABSTRACT:

Background

To investigate relationships among neonatal hypothyroidism, family income, and intellectual disability, as well as the combined effects of neonatal hypothyroidism and low family income on intellectual disability.

Methods

Data were extracted from the National Health Insurance Service-National Sample Cohort from 2002 to 2011. This retrospective study included 91,247 infants. The presence of intellectual disability was based on the disability evaluation system in Korea. Newborn hypothyroidism was identified from diagnosis and prescription codes. Family income was determined from average monthly insurance premiums. Cox proportional hazards models were used to calculate adjusted hazard ratios.

Results

Of the 91,247 infants, 208 were considered to have intellectu

SUBMITTER: Nam JY 

PROVIDER: S-EPMC6221285 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature