The phrase "a decrease in the rates of" is correct and usable in written English.
It can be used when discussing a reduction in frequency, amount, or level of something, often in a statistical or analytical context.
Example: "The study revealed a decrease in the rates of unemployment over the past year."
Alternatives: "a reduction in the levels of" or "a decline in the rates of".
We don't know if it is this or a decrease in the rates of the mosquito vector or infections".
Cuba's economic crisis in the 1990s had a silver lining, scientists are reporting: a decrease in the rates of obesity, diabetes, coronary heart disease and stroke.
It also includes a decrease in the rates of road construction, parking garages and other means that the authors consider to encourage car ownership.
Hormone levels in males are affected, leading to a decrease in the rates of key courtship behavior, and fewer approaches by females during the mating season.
From the 1980s to 2004, many countries have seen both a decrease in the rates of fatal burns and in burns generally.
This aneuploidy was attributed to increased meiosis I non-disjunction as a consequence of a decrease in the rates of recombination [23].
During disturbed conditions, the decrease in the upward wind results in a decrease in the rate of thermal expansion and, hence, a decrease in the cooling rate.
The rate of infections acquired at the city's 11 public hospitals has decreased since 2005, including a 78 decrease in the rate of pneumonia cases among patients on ventilators.
The report shows that between September 2012 and September 2013 there was an increase in the percentage of projects rated amber/red and a decrease in the percentage rated green.
The decrease in attention modulation was evident in the decrease in the rate of target detection.
An 8percentt decrease in preventable hospitalizations and an 11percentt decrease in physical inactivity are both national successes, while there has also been an increase in the prevalence of recommended vaccinations and a decrease in smoking rates.
