The phrase "and decreased the number" is correct and usable in written English.
It can be used when discussing a reduction in quantity or frequency of something, often in a statistical or analytical context.
Example: "The new policy was effective in reducing waste, and decreased the number of plastic bags used by the store."
Alternatives: "and reduced the quantity" or "and lowered the count".
Webshots has faced increasingly stiff competition from Yahoo, which has in recent months rolled out a number of new features to enable users to share their photos more easily and decreased the number of places where advertisements appear.
Riluzole retarded wind-up generation and decreased the number of spikes per stimulus during wind-up.
DEX significantly reduced diazepam requirements in ICU patients with AWS and decreased the number of patients who required haloperidol for severe agitation and hallucinations.
This method effectively guaranteed the load balance of the network and decreased the number of transmission routes and nodal energy consumption.
Introduction of highly active antiretroviral therapy (HAART) increased the life expectancy of patients and decreased the number of patients developing dementia.
The increase of ethylene oxide groups and concentration of surfactants increased the size distribution of pores and decreased the number of pores on the films.
These observations are strong evidence of a successful oxidation process that resulted in the reduction of the particle size of the graphene and decreased the number of layers by the exfoliation effect.
Past government decrees endorsed comprehensive ambulatory TB treatment and decreased the number of TB hospitals and beds available in Karakalpakstan [23, 35], but no regulation changed the system-inherent incentives to hospitalize TB patients.
The results demonstrate that NP-Pt did not affect the growth and development of the embryos; however, they induced apoptosis and decreased the number of proliferating cells in the brain tissue.
Use of feed barriers increased cow feeding time and decreased the number of feeding bouts in relation to the total time feed was available, particularly in subordinate cows, and reduced the number of cow displacements during feeding.
If such policies were effective and decreased the number of inmates in their prisons it would negatively impact their bottom line.
