Regarding public hospitals under Hospital Authority, by the end of 2016 there were 28,000 people with dementia receiving care in HA (Food and Health Bureau, 2017a), but whether they have been hospitalised is not clear.

References:

Food and Health Bureau. (2017a). Mental Health Review Report.  Retrieved from https://www.fhb.gov.hk/download/press_and_publications/otherinfo/180500_mhr/e_mhr_full_report.pdf.