"a moderate decrease" is correct and usable in written English.
It can be used to indicate that a decrease in something has been relatively small in comparison to others. For example, "Sales declined by 10%, a moderate decrease compared to the previous quarter."
The red fraction exhibits a moderate decrease with increasing redshift.
Consumer confidence improved in December, following a moderate decrease in November.
Nine participants displayed a moderate decrease in antisaccade peak velocity (average effect size, 0.58 ± 0.58) with the placebo.
Moreover, a moderate decrease of storage modulus and glass transition temperature was observed.
Likewise, we observed only a moderate decrease in the atmospheric region below the stratopause.
Hydralazine demonstrated the least pulmonary specificity and resulted in a large decrease in systemic vascular resistance, with only a moderate decrease in pulmonary artery pressure and resistance.
For both cases, a moderate decrease in thermal interface resistance (TIR) occurs from room temperature to 700 °C.
During the rising stage of overland flow the concentration hydrograph decreases rapidly followed by a moderate decrease thereafter.
In line with these results, specific overexpression of bmm using Lsp2-Gal4 or ppl-Gal4 resulted in a moderate decrease of fat content and prevented HFD-induced fat accumulation (Fig. 4f).
Conclusions: The elimination of S100B after cardiac surgery is faster than reported earlier and not affected by a moderate decrease in GFR.
We report that in both conditions stress induced a marked paradoxical sleep increase, whereas wakefulness displayed a moderate decrease and slow wave sleep a moderate augmentation.
