As people get older, they may fall more often for a variety of reasons including problems with balance, poor vision, and dementia. Up to 30% may fall in a year. Although one in five falls may require medical attention, less than one in 10 results in a fracture.
This review looked at the healthcare literature to establish which fall prevention interventions are effective for older people living in the community, and included 159 randomised controlled trials with 79,193 participants.  
Group and home-based exercise programmes, usually containing some balance and strength training exercises, effectively reduced falls, as did Tai Chi. Overall, exercise programmes aimed at reducing falls appear to reduce fractures.
Multifactorial interventions assess an individual's risk of falling, and then carry out treatment or arrange referrals to reduce the identified risks. Overall, current evidence shows that this type of intervention reduces the number of falls in older people living in the community but not the number of people falling during follow-up. These are complex interventions, and their effectiveness may be dependent on factors yet to be determined.  
Interventions to improve home safety appear to be effective, especially in people at higher risk of falling and when carried out by occupational therapists. An anti-slip shoe device worn in icy conditions can also reduce falls.
Taking vitamin D supplements does not appear to reduce falls in most community-dwelling older people, but may do so in those who have lower vitamin D levels in the blood before treatment.  
Some medications increase the risk of falling. Three trials in this review failed to reduce the number of falls by reviewing and adjusting medications. A fourth trial involving family physicians and their patients in medication review was effective in reducing falls. Gradual withdrawal of a particular type of drug for improving sleep, reducing anxiety, and treating depression (psychotropic medication) has been shown to reduce falls.
Cataract surgery reduces falls in women having the operation on the first affected eye. Insertion of a pacemaker can reduce falls in people with frequent falls associated with carotid sinus hypersensitivity, a condition which causes sudden changes in heart rate and blood pressure.
In people with disabling foot pain, the addition of footwear assessment, customised insoles, and foot and ankle exercises to regular podiatry reduced the number of falls but not the number of people falling.
The evidence relating to the provision of educational materials alone for preventing falls is inconclusive.

Interventions for preventing falls in older people living in the community

Statistical Methods for Health Care Research

Background 
Approximately 30% of people over 65 years of age living in the community fall each year.
Objectives
To assess the effects of interventions to reduce the incidence of falls in older people living in the community.
Search strategy
We searched the Cochrane Bone, Joint and Muscle Trauma Group Specialised Register, CENTRAL (The Cochrane Library 2008, Issue 2), MEDLINE, EMBASE, CINAHL, and Current Controlled Trials ( all to May 2008).
Selection criteria
Randomised trials of interventions to reduce falls in community-dwelling older people. Primary outcomes were rate of falls and risk of falling.
Data collection analysis
Two review authors independently assessed trial quality and extracted data. Data were pooled where appropriate.
Main results
We included 111 trials ( 55,303 participants). Multiple-component group exercise reduced rate of falls and risk of falling (rate ratio (RaR) 0.78, 95% CI 0.71 to 0.86; risk ratio (RR) 0.83, 95% CI 0.72 to 0.97), as did Tai Chi ( RaR 0.63, 95% CI 0.52 to 0.78; RR 0.65, 95% CI 0.51 to 0.82), and individually prescribed multiple-component home-based exercise ( RaR 0.66, 95% CI 0.53 to 0.82; RR 0.77, 95% CI 0.61 to 0.97).
Assessment and multifactorial intervention reduced rate of falls (RaR 0.75, 95% CI 0.65 to 0.86), but not risk of falling.
Overall, vitamin D did not reduce falls ( RaR 0.95, 95% CI 0.80 to 1.14; RR 0.96, 95% CI 0.92 to 1.01), but may do so in people with lower vitamin D levels.
Overall, home safety interventions did not reduce falls ( RaR 0.90, 95% CI 0.79 to 1.03); RR 0.89, 95% CI 0.80 to 1.00), but were effective in people with severe visual impairment, and in others at higher risk of falling. An anti- slip shoe device reduced rate of falls in icy conditions ( RaR 0.42, 95% CI 0.22 to 0.78).
Gradual withdrawal of psychotropic medication reduced rate of falls ( RaR 0.34, 95% CI 0.16 to 0.73), but not risk of falling. A prescribing modification programme for primary care physicians significantly reduced risk of falling ( RR 0.61, 95% CI 0.41 to 0.91).
Pacemakers reduced rate of falls in people with carotid sinus hypersensitivity ( RaR 0.42, 95% CI 0.23 to 0.75). First eye cataract surgery reduced rate of falls ( RaR 0.66, 95% CI 0.45 to 0.95).
There is some evidence that falls prevention strategies can be cost saving.
Authors' conclusions
Exercise interventions reduce risk and rate of falls. Research is needed to confirm the contexts in which multifactorial assessment and intervention, home safety interventions, vitamin D supplementation, and other interventions are effective.

Interventions for preventing falls in older people living in the community (Review)

OBJECTIVES: To estimate the magnitude of small meaningful and substantial individual change in physical performance measures and evaluate their responsiveness.

DESIGN: Secondary data analyses using distribution- and anchor-based methods to determine meaningful change.

SETTING: Secondary analysis of data from an observational study and clinical trials of community-dwelling older people and subacute stroke survivors.

PARTICIPANTS: Older adults with mobility disabilities in a strength training trial (n=100), subacute stroke survivors in an intervention trial (n=100), and a prospective cohort of community-dwelling older people (n=492).

MEASUREMENTS: Gait speed, Short Physical Performance Battery (SPPB), 6-minute-walk distance (6MWD), and self-reported mobility.

RESULTS: Most small meaningful change estimates ranged from 0.04 to 0.06 m/s for gait speed, 0.27 to 0.55 points for SPPB, and 19 to 22 m for 6MWD. Most substantial change estimates ranged from 0.08 to 0.14 m/s for gait speed, 0.99 to 1.34 points for SPPB, and 47 to 49 m for 6MWD. Based on responsiveness indices, per-group sample sizes for clinical trials ranged from 13 to 42 for substantial change and 71 to 161 for small meaningful change.

CONCLUSION: Best initial estimates of small meaningful change are near 0.05 m/s for gait speed, 0.5 points for SPPB, and 20 m for 6MWD and of substantial change are near 0.10 m/s for gait speed, 1.0 point for SPPB, and 50 m for 6MWD. For clinical use, substantial change in these measures and small change in gait speed and 6MWD, but not SPPB, are detectable. For research use, these measures yield feasible sample sizes for detecting meaningful change.

Meaningful Change and Responsiveness in Common Physical Performance Measures in Older Adults

BACKGROUND: Approximately 30 per cent of people over 65 years of age and living in the community fall each year; the number is higher in institutions Although less than one fall in 10 results in a fracture, a fifth of fall incidents require medical attention OBJECTIVES: To assess the effects of interventions designed to reduce the incidence of falls in elderly people (living in the community, or in institutional or hospital care) SEARCH STRATEGY: We searched the Cochrane Bone, Joint and Muscle Trauma Group Specialised Register (January 2003), Cochrane Central Register of Controlled Trials (The Cochrane Library, Issue 1, 2003), MEDLINE (1966 to February 2003), EMBASE (1988 to 2003 Week 19), CINAHL (1982 to April 2003), The National Research Register, Issue 2, 2003, Current Controlled Trials (wwwcontrolled-trialscom accessed 11 July 2003) and reference lists of articles No language restrictions were applied Further trials were identified by contact with researchers in the field SELECTION CRITERIA: Randomised trials of interventions designed to minimise the effect of, or exposure to, risk factors for falling in elderly people Main outcomes of interest were the number of fallers, or falls Trials reporting only intermediate outcomes were excluded DATA COLLECTION AND ANALYSIS: Two reviewers independently assessed trial quality and extracted data Data were pooled using the fixed effect model where appropriate MAIN RESULTS: Sixty two trials involving 21,668 people were includedInterventions likely to be beneficial:Multidisciplinary, multifactorial, health/environmental risk factor screening/intervention programmes in the community both for an unselected population of older people (4 trials, 1651 participants, pooled RR 073, 95%CI 063 to 085), and for older people with a history of falling or selected because of known risk factors (5 trials, 1176 participants, pooled RR 086, 95%CI 076 to 098), and in residential care facilities (1 trial, 439 participants, cluster-adjusted incidence rate ratio 060, 95%CI 050 to 073) A programme of muscle strengthening and balance retraining, individually prescribed at home by a trained health professional (3 trials, 566 participants, pooled relative risk (RR) 080, 95% confidence interval (95%CI) 066 to 098) Home hazard assessment and modification that is professionally prescribed for older people with a history of falling (3 trials, 374 participants, RR 066, 95% CI 054 to 081) Withdrawal of psychotropic medication (1 trial, 93 participants, relative hazard 034, 95%CI 016 to 074) Cardiac pacing for fallers with cardioinhibitory carotid sinus hypersensitivity (1 trial, 175 participants, WMD -520, 95%CI -940 to -100) A 15 week Tai Chi group exercise intervention (1 trial, 200 participants, risk ratio 051, 95%CI 036 to 073) Interventions of unknown effectiveness:Group-delivered exercise interventions (9 trials, 1387 participants) Individual lower limb strength training (1 trial, 222 participants) Nutritional supplementation (1 trial, 46 participants) Vitamin D supplementation, with or without calcium (3 trials, 461 participants) Home hazard modification in association with advice on optimising medication (1 trial, 658 participants), or in association with an education package on exercise and reducing fall risk (1 trial, 3182 participants) Pharmacological therapy (raubasine-dihydroergocristine, 1 trial, 95 participants) Interventions using a cognitive/behavioural approach alone (2 trials, 145 participants) Home hazard modification for older people without a history of falling (1 trial, 530 participants) Hormone replacement therapy (1 trial, 116 participants) Correction of visual deficiency (1 trial, 276 participants)Interventions unlikely to be beneficial:Brisk walking in women with an upper limb fracture in the previous two years (1 trial, 165 participants) AUTHORS' CONCLUSIONS: Interventions to prevent falls that are likely to be effective are now available; less is known about their effectiveness in preventing fall-related injuries Costs per fall prevented have been established for four of the interventions and careful economic modelling in the context of the local healthcare system is important Some potential interventions are of unknown effectiveness and further research is indicated Language: en

Rolf Moe-Nilssen

Papers

Estimation of gait cycle characteristics by trunk accelerometry.

Test-retest reliability of trunk accelerometric gait analysis

Test-retest reliability of trunk accelerometry during standing and walking

Trunk accelerometry as a measure of balance control during quiet standing

Interstride trunk acceleration variability but not step width variability can differentiate between fit and frail older adults