This is correct and usable in written English.
You can use this phrase when you want to compare two or more things in terms of improvement. For example, "Her diet and exercise regimen has improved compared to last year."
Although the utilisation of these preventive therapies has improved compared with previous studies, additional improvements could be made and in particular there is a continuing under-utilisation of ACE inhibitors.
Many doctors attribute improvements in quality of care to these clinics: "She says the care has improved compared to the past, partly due to the chronic disease clinics which allow the doctors to focus on the chronic patients" (fieldnotes, discussion with a doctor, centre 37).
She is not brilliant with other dogs but she has improved compared to how she was.
An overweening state was stripped threadbare by looters, while the incoming American administrators watched like Nero at the burning of Rome.But a nationwide opinion poll, sponsored by several broadcasting stations, shows that more than half the Iraqis asked believe that their life has improved compared with a year ago (see table).
Most importantly, the low light quality has improved compared to the Galaxy S5.
The study quality has improved compared to the recommendations of 2004 and the publications corresponded more well to the requirements of the "CONSORT statement" [67].
In a 1988 survey, some 80percentt of dedicated Republicans accurately said it had improved, compared with 30percentt of loyal Democrats.
Experts said the gales were relatively weak compared with the Great Storm of 1987 but the event showed how much weather predictions had improved compared with 26 years ago.
Women who had been counselled reported that the quality of their lives had improved, compared with those of a control group who had not been counselled.
"I think things have improved compared to the old days, thanks to the influence of Korean popular culture," said Byoung-Uk Lee, assistant director of the Korea Trade-Investment Promotion Agency in Japan.
Not surprisingly, more high-income voters were positive about their finances: about 3 in 10 voters making more than $100,000 said their situations had improved, compared with about one in 10 among those making less than $50,000.
