Falls Prevention & Home Modification Review

Falls among community-dwelling older adults represent one of Canada's most significant and preventable public health burdens. This review synthesizes evidence from systematic reviews, randomized controlled trials (RCTs), meta-analyses, and national surveillance data to characterize the scope of fall-related injury in Canada, describe the interaction between environmental risk factors and individual-level physiological vulnerability, and evaluate the efficacy of home modification as a targeted intervention strategy.

Evidence consistently supports home modification — particularly when delivered through professional assessment by occupational therapists — as a clinically meaningful component of multifactorial falls prevention. Highest-priority modification domains include bathrooms, transitional spaces, and stairways. The evidence base for personalized, professionally guided interventions substantially outperforms generic hazard reduction approaches.

Falls represent the leading cause of injury-related hospitalizations and injury deaths among Canadians aged 65 years and older. According to the Public Health Agency of Canada's (PHAC) Surveillance Report on Falls (2022), an estimated one in three older adults falls at least once annually, a proportion that rises to more than one in two for adults over 80 years of age.

Between fiscal years 2008/09 and 2019/20, annual fall-related hospitalizations among Canadian older adults increased by 47%, from 49,152 to 72,392 (Yao et al., 2025). While age-standardized rates remained relatively stable — suggesting an aging demographic effect rather than a rising individual risk rate — the crude mortality rate from falls increased by 111% from 2001 to 2019, and death rates due to falls increased 51% between 2017 and 2022 (PHAC, 2022; Health Infobase Canada, 2024).

Of fall-related hospitalizations, over a third (34%) involve hip fracture — one of the most clinically significant fall sequelae, associated with prolonged rehabilitation, functional decline, and precipitated admission to long-term care.

Sex, Age, and Living Arrangement as Differential Risk Factors

The PHAC surveillance data demonstrates consistent sex differences in fall burden. Women accounted for nearly two-thirds (64%) of fall-related hospitalizations among older adults in 2022. Both hospitalization and emergency department visit rates increase with age for men and women, though women demonstrate consistently elevated rates across all age strata.

Older adults living alone and those with low income are identified by PHAC as priority subgroups for prevention targeting, given both the elevated risk of falling and the potential for prolonged time on the floor post-fall — a secondary injury exposure with its own attendant complications including dehydration, pressure injury, rhabdomyolysis, and hypothermia.

Falls are multifactorial events arising from the interaction between intrinsic individual-level factors and extrinsic environmental conditions. The PHAC taxonomy organizes risk factors across four domains: biological/intrinsic, behavioural, social/economic, and environmental.

The Environment–Person–Occupation Interaction Model

The relationship between environmental hazards and fall risk is not linear. The Competence-Press Model, originally formulated by Lawton and Nahemow (1973), posits that falls and adverse functional outcomes arise when environmental demands (press) exceed individual adaptive capacity (competence). Under this framework, the identical physical hazard — a step-over tub threshold, for example — presents negligible risk to an ambulatory individual with preserved balance, but may represent an unacceptable barrier for someone with reduced lower-limb strength, visual impairment, or polymedicated orthostatic hypotension.

This model has direct implications for assessment methodology: home modification interventions that achieve the most clinically meaningful outcomes are those that integrate individualized functional assessment with environmental hazard identification, rather than implementing generic modifications based on checklist-driven protocols alone (Cumming et al., 1999; Pighills et al., 2011).

The Bathroom as the Highest-Risk Home Environment

Across the literature, the bathroom consistently emerges as the most hazardous room in the domestic setting for older adults. A 2014 study found that falls in the bathroom were 2.4 times more likely to result in physical injury than falls occurring in the living room (OR = 2.4; 95% CI = 1.2–4.9), even after controlling for age, sex, and fall direction.

The convergence of risk factors in the bathroom environment is explanatory: hard non-yielding surfaces, wet flooring following bathing, the physical demands of transfers during toileting and bathing, low toilet height inconsistent with reduced hip extensor strength, and the frequent absence of supportive handholds create a concentrated hazard profile without equivalent in other domestic spaces.

The evidence base for home modification in falls prevention has expanded substantially over the past two decades. The current state of evidence rests on a foundation of RCTs, systematic reviews, and meta-analyses.

Meta-Analytic Findings

• ✓Lektip et al. (2023): Systematic review and meta-analysis of 12 RCTs (n = 1,960). Moderate-quality evidence for a 7% reduction in fall risk across all participants (RR = 0.93; 95% CI 0.87–1.00).
• ✓Clemson et al. (2008): RCT-level analysis demonstrating a clinically significant 39% reduction in falls among high-risk older adults receiving professional home assessment and modification (RR = 0.61; 95% CI 0.47–0.79; NNT = 4).
• ✓Stark et al. (2021): RCT of the Home Hazard Removal Program (HARP), an OT-guided intervention. Demonstrated a clinically significant 38% reduction in falling rates compared with controls.
• ✓Cochrane meta-analysis: A 21% decrease in fall incidence (RR = 0.79; 95% CI 0.65–0.97) across trials with comprehensive professional assessment components.
• ✓Kim et al. (2025): Analysis of 20 studies, 65% confirmed the effectiveness of home modifications. Bathroom and mobility modifications were present in 100% of included studies.

The heterogeneity in point estimates (7% to 39% fall reduction) reflects variation in intervention intensity, participant risk profiles, and degree of professional involvement. There is consistent evidence that the magnitude of benefit is larger when: (a) participants are selected for elevated fall risk; (b) intervention is delivered by a qualified occupational therapist; (c) the intervention is personalized to individual functional capacity; and (d) adequate follow-up and booster support is provided.

Multifactorial versus Single-Component Interventions

A systematic review under the American Occupational Therapy Association's Evidence-Based Practice Project (Gitlin et al., 2006) analyzed 33 studies and concluded that the strongest outcomes were found for multifactorial programs integrating home evaluation and modification, physical activity, education, vision and medication review, and assistive technology. The evidence for home modification delivered as a single-component intervention was rated as "moderate" — meaningful, but considerably strengthened in combination with exercise prescription and clinical review.

The following synthesizes the evidence for specific home modifications by location, drawing on the intervention literature and current best-practice guidance from PHAC, the Canadian Task Force on Preventive Health Care, and the occupational therapy literature.

Bathroom Modifications

• ✓Grab bars (shower, toilet, bath) — Strong evidence. Present in all 20 studies in Kim et al. (2025). Must be anchored to structural backing; minimum load rating 250 lbs; placement informed by individual functional assessment.
• ✓Curbless / zero-threshold shower — Strong evidence. Step-over barriers identified as primary bathroom hazard. Requires proper linear drain and floor slope; consider spatial clearance for seated showering.
• ✓Non-slip flooring — Strong evidence. Present in 100% of included studies. Permanent textured tile preferred over adhesive decals in wet zones.
• ✓Comfort-height toilet — Moderate–strong evidence. Raised seat reduces demand on hip extensors during sit-to-stand. Toilet safety rails increase safety synergistically.

Stairs and Transitions

• ✓Bilateral stair handrails — Strong evidence. Absence is a primary stair fall hazard. Both sides mandatory for individuals with unilateral upper-limb weakness; minimum grip diameter 1.25–1.5 inches.
• ✓Threshold ramps / level transitions — Moderate evidence. Threshold lips are a documented trip hazard. Particularly important for mobility aid users.

General Living Areas

• ✓Nightlighting (motion-activated) — Moderate evidence. Nocturia-related falls represent a significant sub-population risk. Pathway from bedroom to bathroom is primary nighttime risk corridor.
• ✓Stair lift / platform lift — Moderate evidence. Clinically indicated where stair navigation is high-risk. Eliminates stair fall exposure entirely.
• ✓Hazard removal (rugs, clutter, cords) — Moderate evidence. Removable rugs and pathway clutter are consistently identified as modifiable trip hazards.

The Role of Professional Assessment

Canada's policy response to falls among older adults is framed within a multifactorial prevention paradigm consistent with WHO's Decade of Healthy Ageing (2021–2030) commitments.

Several federal and provincial funding instruments support home modification for eligible older adults in Ontario:

The Certified Aging-in-Place Specialist (CAPS) designation, developed by the National Association of Home Builders (NAHB) in collaboration with AARP since 2002, represents the primary professional credential for renovation professionals specializing in aging-in-place modifications.

The CAPS designation is not a clinical credential — it does not qualify professionals to perform functional capacity evaluation. Rather, it provides the modification-side expertise that complements occupational therapy's functional assessment capabilities. The clinical literature consistently supports an interdisciplinary model in which an occupational therapist conducts the person-environment functional assessment, while a CAPS-credentialed modification specialist implements the physical changes (Gitlin, 2003; Kim et al., 2025).

Implementation Barriers and Facilitators

Despite robust evidence for home modification efficacy, implementation remains inconsistent. Identified barriers include:

• ✓Lack of awareness among older adults regarding available modifications and funding
• ✓Reluctance to accept modifications perceived as institutionalizing the domestic environment
• ✓Costs where funding programs do not fully offset expenses
• ✓Difficulty locating qualified assessors and installers
• ✓Absence of a single coordinated point of contact to navigate assessment, planning, funding applications, and trade coordination

The evidence base for home modification as a falls-prevention intervention is substantive, consistent in direction, and increasingly supported by systematic reviews of high methodological quality.

• ✓Falls among community-dwelling older adults in Canada are a major and growing public health burden. The direct economic cost of $5.6 billion annually justifies substantial investment in primary prevention.
• ✓Environmental factors are modifiable fall determinants, but their contribution to fall risk is best understood through person-environment interaction. Modification without individualized functional assessment is systematically less effective.
• ✓Bathroom falls are disproportionately injurious (OR 2.4 vs. living room), and bathroom modifications are the highest-priority category across all reviewed studies.
• ✓Professionally guided interventions significantly outperform self-directed hazard reduction. OT-led programs achieve fall reductions of 21–39%. The NNT of 4 (Clemson, 2008) represents excellent clinical value.
• ✓Multifactorial interventions are most effective. Home modification integrated with exercise, medication review, and vision assessment achieves superior outcomes.
• ✓Canadian policy supports and in several programs requires OT assessment as a prerequisite for provincial modification funding.
• ✓Coordination barriers remain a primary implementation challenge. Models providing a single integrated point of contact for assessment, funding navigation, trade coordination, and ongoing monitoring address the most frequently identified barrier.

This article was prepared by Still at Home Inc. for informational purposes for healthcare professionals, researchers, and industry partners. It does not constitute clinical advice. All cited studies are published in peer-reviewed journals or national surveillance databases. Still at Home is a CAPS-certified managed service — not a clinical service provider. OT clinical assessments are provided through our licensed partner network.