Over a 130, 000 Cubans have arrived here since 2000, more than during the entire Mariel Boatlift.
The Golden Boys, starring Bruce Dern, David Carradine, Rip Torn and Mariel Hemingway was investigated too.
Arenas had left Cuba on the Mariel boat lift and had been living in New York.
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But Mariel Hemingway said she had been in touch with her sister the week before she died.
The choice of Mariel, one of the closest points in Cuba to the United States, is significant.
Mariel Hemingway has discussed her sister's struggles in numerous interviews over the years.
In a post-embargo world, Mariel, which is expected to be open for business by 2012, would be a well-positioned hub.
Mariel, too, said she has had depression and suicidal thoughts, and recalls suffering insecurity and being fearful and depressed growing up.
Mariel Jessup of the University of Pennsylvania noted that the study did not really have the statistical power to make such conclusions.
Seven members of Hemingway's family have died by taking their own lives, including Ernest and Mariel Hemingway's older sister Margaux, she said.
"She represented being, you know, 'crazy, ' " Mariel Hemingway said last week.
And while some advertisers were skittish about a kiss between the star and Mariel Hemingway in "Roseanne, " there were many who embraced the show.
For instance, one examined the impact of the sudden and notorious inflow of refugees to Miami from the Cuban port of Mariel in 1980.
Mariel Hemingway had denied her sister's death was a suicide until an event hosted by the American Association for the Prevention of Suicide in 2003.
Ernest Hemingway, who won the 1954 Nobel Prize in Literature, struggled with depression and killed himself in 1961, just months before Mariel Hemingway was born.
As in the Mariel exodus, the United States regards the refugee outflow as threatening to U.S. interests, and the U.S. Coast Guard acts to prevent further migration.
After the 1980 Mariel boat-lift had brought an estimated 120, 000 Cubans to America's shores, Hialeah became the first city in south Florida to elect a Cuban-American mayor.
That includes its efforts during the Mariel Boatlift from April to September 1980, when about 124, 000 Cuban migrants used mostly U.S. vessels to try to get to the United States.
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Most notably, an estimated 25, 000 Haitians were among the mass migration of more than 150, 000 asylum seekers who arrived in South Florida during the Mariel boatlift, an exodus of mostly Cuban migrants in 1980.
Others include God Loves Uganda, about American religious leaders and their East African counterparts, and Running From Crazy, in which the actress Mariel Hemingway - granddaughter of author Ernest - explores her family's history of mental illness.
There's a careful study of the Mariel boatlift, for example, which was a kind of natural experiment where a large number of Cuban immigrants were, if you will, dumped on the shores of Southern Florida all of a sudden in effort to try to find in the years after whether there was any negative effect on workers and black workers of this unexpected influx.
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