Two-year longitudinal study of signs of XXXX in adolescents.

@entity1 @entity409 @entity1348
Signs of @entity409 in adolescents were studied longitudinally from the age of 17 to 19 years. Totally, 27 subjects dropped out, leaving 258 for the longitudinal intraindividual comparisons. @entity1348 sounds were found in about one-fifth of the adolescents and were recorded significantly more often in @entity1 than @entity1 from the age of 18 years. The frequency of muscles tender to palpation fluctuated somewhat between the annual examinations. At the first and second examination muscle tenderness was statistically significantly commoner in @entity1 than in @entity1 . Except for @entity1348 sounds and muscle tenderness signs of @entity409 were rare. About half of the subjects had signs of @entity409 , mostly of mild character. @entity1 regularly had significantly higher dysfunction index (Di) values than @entity1 . No change between the annual recordings was noted in 60% of the individuals, and impairment and improvement had occurred about equally often. In 29%, signs were recorded all years.
