The phrase "areas studied" is correct and usable in written English.
It can be used to refer to specific subjects or fields that have been examined or researched.
Example: "The report highlights the various areas studied during the research project, including environmental science and public health."
Alternatives: "fields of study" or "subjects examined".
Among the eight police areas studied, the rate of no-criming varied hugely - from 4%to47%7%.
Art and design are the most common subject areas, studied by more than 20% of foundation students starting in 2008-9, andistancece learning is popular.
Populations of elk and wolves in the areas studied are stable, so snowmobiling does not appear to have a direct physical effect on the wildlife.
Of the New Jersey areas studied, the Middlesex-Somerset-Hunterdon area had the second largest increase with a 12.3percentt jump and a median price of $238,900.
But New Yorkers spent less on household furnishings than the residents of any of five other metropolitan areas studied except for Boston.
Countries including Canada, Peru and Namibia, were among 18 found to have no legal restrictions on women in the seven areas studied.
Their varied modes of reproduction and their ability to regulate body temperatures are two of many areas studied by comparative physiologists (see thermoregulation).
Miami-Dade ranked 10th in the country in foreclosure activity in August among the 212 metropolitan areas studied by RealtyTrac, up from 26th in August 2011.
Four thousand private sector jobs were created for the city of 450,000 between 2011 and 2012, placing it in the top 15 of the 64 urban areas studied.
Population growth has continued over the four years of the project, and appears to be part of a global phenomenon, with most coastal areas studied around the world also reporting a rise in numbers.
There are several key focus areas studied in this paper.
