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14770 Surgery

Which one of the following statement is true?

AThe standard error of the mean (SEM) is generally larger than the standard detion (SD).
BThe standard error of the mean provides a measure of the spread of observation around the mean
CThe mean and standard detion of random sample will generally be different from the mean and standard detion of the population.
DThe coefficient of variation is derived from the range.
Surgery
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14777 Surgery

A newborn boy was examined to exclude congenital dislocation of the hip (CDH). Which of the following tests is relative to the management of CDH?In Ortolani’s sign, abduction and lifting with the fingers produces a corresponding jerk when the dislocated femoral head slides back into the acetabulum

AThe diagnosis should be established between 2 and 4 years of age.
BAbduction of the flexed hip causes a click (Ortolani's sign)
CAbduction of the hip is not limited.
DApparent lengthening of the thigh with the hip and knee flexed may be seen.
Surgery
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