Objective To know the distribution of TSH and incidence of neonatal congenital hypothyroidism(CH),and study the screening cut-off points of the thyroid-stimulating hormone(TSH)in Anqing. Methods The neonatal screening data about 59 295 newborns in Anqing were analyzed and the TSH cut-off points were calculated by method of percentiles and Receiver Operating Characteristic (ROC)curve,then,the incidence of sufferers was analyzed by different cut-off points. Results The distribution of the neonatal screening data was deflection,P50 was 2.52 mU/L,P99 was 8.94 mU/L.Combined with ROC curve,the cut-off points of our lab was 8.12 mU/L. Conclusions Different cut-off points effect the consequences of the neonatal screening.It is important to establish the suitable cut-off points with ROC curve based on lab.
Key words
congenital hypothyroidism /
thyrotropic-stimulating hormone /
neonatal screening /
ROC curve /
cut-off points
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