Final answer:
There is no specific data provided to determine the percentage of nursing home residents given antipsychotics.
Step-by-step explanation:
According to the information provided, there are no specific statistics or percentage given for the use of antipsychotics in nursing home residents. The references provided focus on prescription medication and infectious diseases in nursing homes, but do not provide specific data on antipsychotic use. Therefore, it is not possible to provide an accurate answer to the question at this time.