The phrase "a massive study in" is correct and usable in written English.
It can be used when referring to a large-scale research project or analysis in a specific field or subject area.
Example: "The researchers conducted a massive study in the effects of climate change on marine biodiversity."
Alternatives: "a comprehensive analysis of" or "an extensive investigation into".
The results of a massive study of taxi drivers in Beijing support that suspicion: Avoiding certain passengers based on their destination is profitable.
Jim Collins, co-author of a massive study of the common factors in companies that notched up exceptional long-term growth, found that their leaders shared "tremendous ambition for the cause, the company, the work but not themselves and the unbelievably terrifying will to make good on that".
In a massive study of over 44,000 Latinos, for example, "undocumented Mexicans had 1.6 fewer physician visits than U.S.-born Mexicans," and that "other undocumented Latinos had 2.1 fewer visits".
In a massive study of half a million residents of Salt Lake County, researchers at the University of Utah found that an average-sized man weighed 10 pounds less if he lived in a walkable neighborhood – "those that are more densely populated, designed to be more friendly to pedestrians and have a range of destinations for pedestrians" – versus a less walkable one.
According to a massive study by The Wall Street Journal, in the Republican primaries, Donald Trump won 89 of the 100 counties most negatively affected by expanded trade with China.
Lower prevalence of WCH was also found in a massive multicenter study in Spain, comprising 12,895 treated hypertensive patients, of whom 2,772 had type 2 diabetes.
When a massive replicability study in psychology was published last year, the results were, to some, shocking: 60% of the 100 experimental results failed to replicate.
In the same year that Malinowski's book appeared, Katharine Bement Davis published her massive study Factors in the Sex Life of Twenty-two Hundred Women, which included survey data about masturbation before and after marriage, the use of contraceptives, and various aspects of sexual intercourse.
Just under 11,500 people took part in a massive online study for six weeks, in which they had to practice a range of different brain training tasks for a minimum of 10 minutes per day, three times per week.
