Validation of a New Scale of Balance Recovery Confidence for Community-dwelling Older Adults
试验速览
- 阶段
- 不适用
- 入组人数
- 200
- 试验地点
- 1
- 主要终点
- Activities-specific Balance Confidence Scale
研究概览
简要总结
Introduction: Patient-reported outcome measures (PROMs) provide clinicians with a greater understanding of patients' perceived ability in their physical performance. Existing PROMs on falls efficacy provide meaningful information about the perceived ability in older people to perform common activities of daily living without falling. However, the perceived ability to recover the balance from a slip, a trip, or volitional movements has been inadequately assessed. Balance recovery confidence relates to the judgement of self-reactive ability. The scale of balance recovery confidence (BRC) is a new PROM that measures perceived balance recovery self-efficacy. The purpose of the study protocol is to describe the first psychometric evaluation of BRC's measurement properties.
Methods and analysis: This study is a validation phase of a newly developed PROM conducted in Singapore. Two hundred community-dwelling older adults, aged 65 years and older, will complete five self-reported instruments (BRC), Activities-specific Balance Confidence Scale (ABC), Falls Efficacy Scale-International (FES-I), Late-Life Function and Disability Instrument-Function (LLDI-F) and Global Perceived Effect (GPE) and three performance measures (Hand strength dynamometer, 30-second Chair Stand, Mini BESTest). Classical test theory methods will assess acceptability, data completeness, targeting of the items, scaling assumptions, internal consistency reliability and construct validity. Factor analysis will establish unidimensionality. Rasch analysis will evaluate item fit, differential item functioning, response scale ordering, targeting of persons and items and the reliability.
详细描述
Introduction: This study aims to conduct the first evaluation of measurement properties in the scale of balance recovery confidence. There are several measurement properties such as unidimensionality, validity (to what extent does the instrument measure the construct it purports to measure) and reliability (the degree to which measurement is free from error) of the PROM that is needed to be studied.
This psychometric validation aims to provide evidence that the PROM can be purposefully used in practice, given that rigorous methods have been applied for the development and validation of the BRC. For the study, balance recovery confidence is defined as the perceived ability to recover one's balance from perturbations, such as a slip, a trip, or a loss of balance that can occur in common, everyday activities. This focus will leave little ambiguity about precisely what is being measured. The resulting questionnaire is intended to be approximately 20 questions and should not take longer than 10 min to complete. The instrument is not intended to be used as a diagnostic tool of impaired specific balance recovery mechanisms. The BRC allows clinicians and researchers to quantifiably determine the balance recovery confidence in older adults and use the scale as a conduit for understanding older people's perspectives when encountering different perturbations during their daily activities.
The objectives are to:
- To evaluate the measurement properties of the BRC, i.e. acceptability, targeting, scaling assumptions and reliability using Classical Test Theory (CTT), the internal scale structure using Rasch measurement theory in the Singapore community-dwelling older adults.
- To assess the construct validity of the refined BRC against commonly used PROMs and performance measures in the Singapore community-dwelling older adults.
- To refine the items, response categories, and scale structure of the BRC using Rasch measurement theory in an English-speaking sample of community-dwelling older adults in Singapore.
Methods: Participants will attend two sessions in the study. In the first session, the researcher will use a measurement data form to record the participants' results of four questionnaires: BRC, ABC, FES-I, LLFDI-F and three performance measures: Jamar hand strength dynamometer, 30-second chair stand test and Mini BESTest. After seven days, participants will attend the second session to complete the BRC, and the GPE scale which will be used to ensure participants' perception of their abilities remained unchanged during the seven days. The time interval of 7-day had been reported to be sufficient to minimise recall bias. Participants will be asked if they have had experienced a fall, near-fall, or encountered any incident that might affect their balance recovery ability over the past seven days.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Cross Sectional
入排标准
- 年龄范围
- 65 Years 至 —（Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •65-years and older,
- •Living in the community,
- •Functionally independent with or without the use of a walking aid and be able to read,
- •Write and communicate in English.
排除标准
- •Require any physical assistance from another person to walk within the home,
- •Presenting with clinical observable severe cognitive impairment.
- •Unable to provide written consent to participate in the study
结局指标
主要结局
Activities-specific Balance Confidence Scale
时间窗: 5 minutes
The Activities-specific Balance Confidence scale assesses older adults' confidence that they will not fall or lose their balance when performing several progressively challenging balance and mobility tasks. The response option ranged from 0% (no confidence) to 100% (complete confidence). The outcome measure is administered on Day 1
Falls Efficacy Scale - International
时间窗: 5 minutes
The Falls Efficacy Scale- International measures fear of falling or "concerns about falling" relating to basic and more demanding activities both physical and social. The response option ranged from 1-4 depicted by 1 for being not at all concerned, 2 for being somewhat concerned, 3 for being fairly concerned and 4 for being very concerned. The outcome measure is administered on Day 1
Scale of Balance Recovery Confidence
时间窗: 5 minutes
The scale of balance recovery confidence measures the perceived balance recovery self-efficacy in community-dwelling older adults. A response option ranged from 0 to 10 is listed with 10 indicating "Highly certain can do" and 0 refers to "Cannot do at all". The outcome measure is administered on Day 1 and Day 7.
Late-Life Function and Disability Instrument-Function component
时间窗: 5 minutes
The Late-Life Function and Disability Instrument-Functional component of the instrument evaluates self-reported difficulty a person has in performing activities of daily living tasks. Factors that may influence the difficulty in task performance include pain, fatigue, fear, weakness, soreness, ailment, health conditions, and disabilities.There are 32 items with response options of "none," "a little," "some," "quite a lot," and "cannot do." An additional eight items will be completed by those who use canes or walkers. The outcome measure is administered on Day 1
次要结局
- Mini BESTest(10 minutes)
- 30-second chair stand test(10 minutes)
- Jamar hand strength dynamometer(10 minutes)
研究者
Shawn Leng-Hsien Soh
Principal Investigator
Queen Margaret University