Table 1.

POase and DZOase activities and DZOase/POase ratios in the serum of African-American and Caucasian southerners (mean ± SD).

Race	No.	POase activity	DZOase activity	DZOase/POase ratio
All	200	240 ± 144	6,847 ± 2,314	—
African American	100	297 ± 144*	5,973 ± 2,065*	29 ± 24*
Caucasian	100	183 ± 121	7,720 ± 2,227	60 ± 30

Data are expressed as micromoles substrate hydrolyzed per liter of serum.

^*p < 0.05 compared with Caucasians.