Table 1.
Monoamine Oxidase Isoenzyme Activity (Norepinephrine as Substrate) and Risk for Diabetes
| Diabetes | Nondiabetes | p | |
|---|---|---|---|
| MAO-A total [pmol/(min·mg) enzyme] | |||
| Mean ± standard deviation | 5943 ± 3092 | 2673 ± 1527 | 0.010a |
| ptrend < 0.0018b | |||
| MAO-B total [pmol/(min·mg) enzyme] | |||
| Mean ± standard deviation | 6759 ± 3000 | 4044 ± 3228 | 0.010a |
| ptrend < 0.010b | |||
a
p-Value computed by using Friedman's nonparametric test for central tendency, adjusting for age, sex, and race.
b
p-Value computed by using the likelihood ratio trend test, adjusting for age, sex, and race.
MAO, monoamine oxidase.