Effects of Age and Gender on Autoantibody Count.

A total of 57 normal healthy controls were split into three age groups and two gender groups. The percentage of female subjects in each group is indicated. A Z-factor of greater than 0.4 was used to define a positive antibody response. The mean and standard deviation of antibody counts are shown. The difference of the antibody counts between indicated groups were tested by student t test and p value as shown.