The impact of demographic factors on newborn TSH levels and congenital hypothyroidism screening

Optimal newborn screening thyroid-stimulating hormone (TSH) cut-offs are contentious. Analysis of demographic factors that impact screen TSH levels may help explain international variance and provide guidance to screening programmes.To determine the influence of demographic factors on newborn screening TSH levels and screening performance parameters.National, retrospective population study using blood spot TSH cards from the New Zealand newborn...