The letter gha, misnamed by ISO as "LATIN LETTER OI", although it is typographically based on Q.
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It is not to be confused with the Yiddish exclamation of dismay or exasperation "oy" or "oy vey".
The phrase "Oi" popularized in the punk and ska world by bands like the Cockney Rejects, was derived from the Greek phrase hoi polloi meaning "the people" in a derogatory way.
In Dutch, the word "Oi" is short for "Hoi", a greeting with the same meaning as "Hi" in English.
A positive type I collagen study confirms the diagnosis of OI, but a negative result leaves open the possibility that either a collagen type 1 mutation is present but was not detected or the patient has a form of the disorder that is not associated with collagen type 1 mutations.
The characteristic features of OI vary greatly from person to person, even among people with the same type of OI, and even within the same family, and not all characteristics are evident in each case.
Because the defect — whether inherited or due to a spontaneous mutation — is usually dominant, a person with OI has a 50 percent chance of passing on the disorder to each of his or her children.