Prevalence and Incidence of Tetrahydrobiopterin Deficiency
Prevalance of Tetrahydrobiopterin Deficiency:
30% of infants born with high phenylalanine levels have tetrahydrobiopterin deficiency in China, Genetics Home Reference website ... see also overview of Tetrahydrobiopterin Deficiency.
approx 1 in 3 or 30.00% or 81.6 million people in USA [Source statistic for calcuation: "30% of infants born with high phenylalanine levels have tetrahydrobiopterin deficiency in China, Genetics Home Reference website" -- see also general information about data sources]
About prevalence and incidence statistics:
The term 'prevalence' of Tetrahydrobiopterin Deficiency usually refers to the estimated population
of people who are managing Tetrahydrobiopterin Deficiency at any given time.
The term 'incidence' of Tetrahydrobiopterin Deficiency refers to the annual diagnosis rate,
or the number of new cases of Tetrahydrobiopterin Deficiency diagnosed each year.
Hence, these two statistics types can differ:
a short-lived disease like flu can have high annual incidence but low prevalence,
but a life-long disease like diabetes has a low annual incidence but high prevalence.
For more information see about prevalence and incidence statistics.