HARTFORD, Conn. — Indian casinos brushed off weak consumer spending in a sluggish U.S. economic recovery to post a modest increase in revenue in 2011, an industry study reported Wednesday.

Not only did revenue rise 3 percent, to $27.4 billion, but Indian casinos are holding on to their share of total casino gambling revenue, competing closely with commercial casinos, according to the report, “Casino City’s Indian Gaming Industry Report.”