ArticleAging clinical and experimental research2016
Measurement strategy and statistical power in studies assessing gait stability and variability in older adults.
Article in Aging clinical and experimental research, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
7 citing papers in PubMed, 15 citations in OpenAlex.
- Effects of frailty and walking speed on gait variability in older adults.Frontiers in medicine · 2026Article
- Genistein and Aphid Probing Behavior: Case Studies on Polyphagous Aphid Species.Molecules (Basel, Switzerland) · 2024Article
- Nonlinear Dynamic Measures of Walking in Healthy Older Adults: A Systematic Scoping Review.Sensors (Basel, Switzerland) · 2022Article
- Ballistic strength training in adults with cerebral palsy may increase rate of force development in plantar flexors, but transition to walking remains unclear: a case series.BMC sports science, medicine & rehabilitation · 2022Article
- Patients' perceived walking abilities, daily-life gait behavior and gait quality before and 3 months after total knee arthroplasty.Archives of orthopaedic and trauma surgery · 2022Article
- Differentiating fallers from nonfallers using nonlinear variability analyses of data from a low-cost portable footswitch device: a feasibility study.Acta of bioengineering and biomechanics · 2021Article
- Quality of Daily-Life Gait: Novel Outcome for Trials that Focus on Balance, Mobility, and Falls.Sensors (Basel, Switzerland) · 2019Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundGait variability and stability measures might be useful to assess gait quality changes after fall prevention programs. However, reliability of these measures appears limited.
aimsThe objective of the present study was to assess the effects of measurement strategy in terms of numbers of subjects, measurement days and measurements per day on the power to detect relevant changes in gait variability and stability between conditions among healthy elderly.
methodsSixteen healthy older participants [65.6 (SD 5.9) years], performed two walking trials on each of 2 days. Required numbers of subjects to obtain sufficient statistical power for comparisons between conditions within subjects (paired, repeated-measures designs) were calculated (with confidence intervals) for several gait measures and for different numbers of trials per day and for different numbers of measurement days.
resultsThe numbers of subjects required to obtain sufficient statistical power in studies collecting data from one trial on 1 day in each of the two compared conditions ranged from 7 to 13 for large differences but highly correlated data between conditions, up to 78-192 for data with a small effect and low correlation. DISCUSSION: Low correlations between gait parameters in different conditions can be assumed and relatively small effects appear clinically meaningful. This implies that large numbers of subjects are generally needed.
conclusionThis study provides the analysis tools and underlying data for power analyses in studies using gait parameters as an outcome of interventions aiming to reduce fall risk.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.