See what questions
a doctor would ask.
25 per 1000 - NHIS95 (trouble with corns or calluses) ... see also overview of Callus.
approx 1 in 40 or 2.50% or 6.8 million people in USA [Source statistic for calcuation: "25 per 1000 - NHIS95 (trouble with corns or calluses)" -- see also general information about data sources]
The term 'prevalence' of Callus usually refers to the estimated population
of people who are managing Callus at any given time.
The term 'incidence' of Callus refers to the annual diagnosis rate,
or the number of new cases of Callus 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.
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