After a month, serum total PSA value was 1.2 ng/ml. In another blood test after 3 months, serum total PSA value rose to 7 ng/ml with a percent free PSA of 40%. The urologist recommended a transrectal ultrasound-guided prostate biopsy. The patient refused biopsy.
Of the four components of aggregate demand, consumption expenditure C is the largest contributing to between 60% and 70% of total expenditure. For this reason, we often start our analysis with this particular component.
The attributable fraction is the fraction of event rate or risk in the exposed population that is attributable to exposure: With a standardized mortality ratio , the attributable fraction is estimated by. The confidence intervals for the attributable fraction can be computed using the confidence intervals for .