Z score measures the bone mineral density compared to:: (A) Age, race and sex matched individuals, (B) Race and sex matched individuals, (C) Sex matched individuals, (D) None of the above
Answer is A. Z Score * Z score compares the patients BMD with that of adult of the same race, age and sex. Z Score indicates possible secondary osteoporosis. A Z Score of - 2 or below should trigger investigation for underlying disease.