How many American police officers are arrested and for what, each year?

The first nationwide study of arrests of police has released its initial results.
"Police officers are arrested about 1,100 times a year, or roughly three officers charged every day, according to a new national study. The most common crimes were simple assault, drunken driving and aggravated assault, and significant numbers of sex crimes were also found. About 72 percent of officers charged in cases with known outcomes are convicted, more than 40 percent of the crimes are committed on duty, and nearly 95 percent of the officers charged are men.
The study is thought to be the first-ever nationwide look at police crime, and was conducted by researchers at Bowling Green State University through a grant from the Justice Department’s National Institute of Justice. The research covered seven years, 2005 to 2011, and sought to quantify not only the prevalence of police officers arrested across the country, but also how law enforcement agencies discipline officers who are arrested and how officer arrests might correlate with other forms of misconduct."

The nearly 700-page full study is here.