'persistent increase in' is a correct and usable part of a sentence in written English.
You can use it to describe something that has been increasing steadily in number, amount, or intensity. For example: "The persistent increase in air pollution has caused a number of health problems in the local population."
This would: "...yield a persistent increase in GDP by crowding in private investment and would also stimulate growth in the rest of the euro area".
This condition begins early in life and is due to iodine deficiency or to other factors that decrease thyroid hormone secretion and result in a persistent increase in thyrotropin secretion and therefore persistent thyroid gland stimulation.
The result, ultimately, of this vicious circle is a persistent increase in borrowing costs that, over time, begins to supersede an already sluggish rate of growth and become what economists call a debt trap.
As well, IMD1 53 caused a persistent increase in heart rate.
Both Ford and GM also sounded an alarm about the persistent increase in health care costs.
Our study demonstrated that a persistent increase in CLI, EVLWI, and fluid balance in critically ill patients is associated with poor outcome.
If, on the other hand, underlying economic effects such as a persistent increase in demand are present, this favors positive correlation.
Here, whether the known persistent increase in lactate levels induced by HV [2, 4, 48] plays a role in the VEP changes remains to be determined.
We find a significant and persistent increase in infant mortality rates and a more modest decrease in birth rates as a result of state centralization.
GFAP mice showed a slight decrease in REM sleep in combination with a profound and persistent increase in EEG theta activity.
Self-administered MA produced a transient striatal DA depletion with a more persistent increase in DA turnover, indicating the presence of some lasting adaptations.
