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Recently published prevalence studies of scoliosis reveal a disconcerting variability, largely due to the use of different diagnostic "cutting points", which are frequently unstated. A statistical analysis of the prevalence of moderate and severe scoliotic curves shows that the distribution of scoliotic curves conforms best to a log normal distribution. Using this analysis, and using 10 degrees as the "cutting point" for the diagnosis, the adolescent scoliosis population consists of approximately 25 per 1,000.
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William J. Kane (1977) studied this question.
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