Connecticut still ranks high among states in the use of antipsychotic drugs for elderly nursing home residents, but its rate of use has dropped 21.6 percent since 2011 – more than the national average — new government data show. The data, released Friday by the Centers for Medicare & Medicaid Services (CMS), show that nursing home residents in Connecticut – many with dementia — are still more likely to be given antipsychotics than their counterparts in 33 other states. But the state’s usage rate has declined more than the national average drop of 17.1 percent. “While quality improvement in the area of reducing off-label antipsychotic drug usage needs to be an ongoing effort, Connecticut’s skilled nursing facilities have achieved very positive change,” said Matt Barrett, executive vice president of the Connecticut Association of Health Care Facilities, which represents nursing homes. He said the state’s homes are making ongoing changes in “behavioral and health care practice” to further reduce reliance on antipsychotics.