One approach to reducing falls is modifying homes so you can eliminate or abate common hazards for frail persons.
Falls Among Older Persons and the Role of the Home: An Analysis of Cost, Incidence, and Potential Savings from Home Modification
The incidence and direct costs of falls are estimated and the nature and location of injuries from falls are highlighted in this AARP Public Policy Institute Issue Brief by Andrew Kochera who reviews the research literature on fall prevention through home modification and uses sensitivity analysis to explore the financial challenges such programs need to address.