The phrase "saw a reduction" is grammatically correct and can be used in written English.
It means to have witnessed or observed a decrease or decrease in something. Example: "The company's cost-cutting measures saw a reduction in their expenses by 20%."
That compared with $3.17 per share on revenue of $15 billion during the fourth quarter a year ago, a period that saw a reduction in tax liabilities.
In this study, some people saw a reduction in systolic blood pressure.
In both non-adnexectomized groups we saw a reduction up to day 5 but a rise at day 10.
After 10 days, the researchers saw a reduction in diastolic blood pressure, triglycerides and LDL, or "bad" cholesterol.
Within a few weeks, she said, both she and her boyfriend saw a reduction in lines on her chest.
Mail Online and theguardian.com continued to increase traffic in November, as all other UK national newspaper websites saw a reduction in monthly browsers.
We have successfully protected the poorest from falling behind and last year we saw a reduction of 100,000 children in workless poor families.
The number of students studying languages, including English, at British universities fell by 35% in the decade to 2017; history and philosophy saw a reduction of 21%.
The rate of infection in the first group was almost 40% less than in the second; the gel's most diligent users saw a reduction of over 50%.
Of 39 patients whose spleen size was evaluated, nearly 80percentt saw a reduction in the enlargement that is a common feature of advanced SM that contributes to abdominal pain and decreased appetite.
Regarding mechanical resistance to compression, the compound with sawdust waste at 40% (S40) saw a reduction of 71%and78%8% for the compound with wood shavings at 40% (WS40).
