Staff:staff and staff:client reliability of the Schalock & Keith (1993) Quality of Life Questionnaire

Is it feasible to assess self-reported quality of life in individuals who are deaf and have intellectual disabilities?

PURPOSE

There is consensus that Quality of Life (QOL) should be obtained through self-reports from people with intellectual Disability (ID). Thus far, there have been no attempts to collect self-reported QOL from people who are deaf and have ID.

METHODS

Based on an established short measure for QOL (EUROHIS-QOL), an adapted easy-to-understand sign language interview was developed and applied in a population (n = 61) with severe-to-profound hearing loss and mild-to-profound ID. Self-reports were conducted at two time points (t₁ and t₂), 6 months apart. The Stark QOL, an established picture-based questionnaire, was also obtained at t₂ and three Proxy ratings of QOL (from caregivers) were conducted for each participant at t₁.

RESULTS

Self-reported QOL was successfully administered at both time points for 44 individuals with mild and moderate ID (IQ reference age between 3.3 and 11.8 years). The self-reports showed sufficient test-retest reliability and significant correlations with the Stark QOL. As anticipated, self-reported QOL was higher than proxy-reported QOL. Test-retest reliability and internal consistency were good for self-reported QOL.

CONCLUSION

Reliable and valid self-reports of QOL can be obtained from deaf adults with mild-moderate ID using standard inventories adapted to the linguistic and cognitive level of these individuals.

Quality of life: A universal or a disability specific concept?

BACKGROUND.

Quality of life (QoL) is an important outcome of occupational therapy practice. Autism spectrum disorder (ASD) is a neurodevelopmental disorder that impacts the individual throughout their lifespan and may substantially affect QoL. Measuring QoL of people with ASD presents a challenge and a debate whether to use general versus disability-specific adapted measures.

PURPOSE.

This paper aims to (a) revisit the construct of QoL and discuss specific dilemmas pertaining to its measurement, and (b) discuss implications to the assessment of QoL in individuals with ASD while highlighting the potential contribution of occupational therapy to the development of measures.

KEY ISSUES.

We suggest adding the domain of accessibility into QoL assessments, including, physical, sensory, social, and cognitive aspects, and to use disability-specific QoL measures.

IMPLICATIONS.

The paper presents a call for occupational therapists to be involved in developing specific ASD disability-oriented measures that consider the unique characteristics of the disorder and environmental supports.

In pursuit of meaningful occupation: Employment and occupational outcomes for older Irish adults with an intellectual disability

BACKGROUND

Adults with an intellectual disability (ID) have much lower rates of employment than their counterparts without intellectual disability, which increases their risk of poverty and social exclusion. Differential treatment of people with intellectual disability in welfare and training policies suggests an expectation they will be passive welfare recipients rather than productive employees.

METHODS

This paper aims to examine occupational activities by older people with intellectual disability in Ireland, exploring factors influencing outcomes using data from the IDS-TILDA study (n = 708).

RESULTS

Most people were unemployed but engaged in regular occupational activity. Occupational activity was associated with better emotional/mental health. Activities of Daily Living (ADL) functioning was associated with an active occupational status, while social supports most strongly predicted high occupational engagement across a range of activities.

CONCLUSIONS

A focus on the individual meaning derived from a broad range of engagement may better support people with intellectual disabilities to benefit from regular occupational activity.

The exercise of human rights and citizenship by older adults with an intellectual disability in Ireland

BACKGROUND

The UN Convention on the Rights of Persons with Disabilities (CRPD) provides the benchmark for assessing human rights and citizenship for people with disabilities. This emphasises autonomy, choice, independence, equality and participation for individuals as its fundamental guiding principles.

METHODS

This paper explores the exercise of human rights and citizenship for older adults with intellectual disabilities (ID) in Ireland, including choice-making, advocacy and political participation. Cross-sectional data (n = 701) is drawn from wave 2 of the Intellectual Disability Supplement to The Irish Longitudinal Study on Ageing. Rates of participation are reported, along with bivariate associations across a range of demographic, personal and social variables, while factors associated with level of choice-making and voting are explored.

RESULTS

We found very low rates of choice-making, advocacy and political participation amongst this population. Two factors of choice were explored: key life choice and everyday choice. Some commonalities were identified between the two factors, yet key differences were also noted. Type of residence was the strongest predictor of key life choice yet not significant in everyday choice, while the reverse was true for functioning in activities of daily living. Other factors were also significant in determining choice, including level of ID, contact with family, functional limitation, literacy, age, having friends and respondent type.

CONCLUSIONS

Low rates of participation reported here impinge on the rights of older adults with ID under the principles of the UN CRPD. Choice-making emerged as a multi-factorial phenomenon, with different factors important depending on the type of choice involved. This encourages a nuanced and personalised response from policy and support services to overcome individual challenges to participation as equal citizens. The significance of respondent type also highlights the difficulty of including self-report, supported and proxy participants in ID research.

Family Members' Perceptions of the Quality of Long-Term Care

The aim of the study is to assess family members' perceptions of the quality of nursing care of older people and its relationships between demographic factors and family involvement. Data were gathered from family members of four residential homes ( N= 474) using structured questionnaires. Data were analyzed using descriptive statistics, correlation, and predictive analyses. The results imply that family members' perceptions of quality were fairly positive. Age, educational background, and the frequency of visits on the ward were related with the quality perception. The association between quality perceptions and family involvement in care proved to be strong. The information and support from the staff and possibilities to participate in decision making were associated with high-quality ratings. The results demonstrate the need for formulating ward policies and training the nursing staff to allow increased family involvement and to support it in an appropriate way.

The assessment of the quality of life of adults with intellectual disability: the use of self-report and report of others assessment strategies

Assessment strategies that reliably and validly assess the indicators of quality of life (QOL) of individuals with intellectual disability (ID) are necessary for planning interventions and evaluating outcomes. In the present study, inter-rater reliability and concordance of the two assessment strategies report of others and self-report were evaluated in a group of 176 Italian adults with ID using the Personal Outcomes Scale, which employs the same QOL indicators in the self-report and report of others versions. Report of others resulted a reliable assessment strategy. Clients' point of view was compared with both the estimation of their point of view and third-party-point-of-view obtained by two independent caregivers for each client. Results indicated that both self-report and report of others assessment strategies are necessary and that estimation of the client's point of view may be a valid and reliable substitute of self-report when clients are not able to answer.

Expanding Assessment of Fear of Falling among Older Adults with an Intellectual Disability: A Pilot Study to Assess the Value of Proxy Responses

Introduction. Fear of falling (FOF) has emerged as an important health concern in older adults, yet it has rarely been investigated in people with intellectual disabilities (ID). Valid and reliable measurement approaches are a particular challenge. Scales that have been developed to measure FOF have not been validated for use with older people with ID and are not routinely used with proxy respondents. Method. 63 people comprised purposeful samples of 3 groups, people with ID , their nominated key workers , and additional support workers . Test-retest reliability and interrater reliability were assessed for using a dichotomous, single-item FOF screening measure. The degree of FOF and activity restriction due to FOF were also investigated. Results. Inter-rater reliability was found to be moderate to excellent with Kappa = 0.77 on ratings of the FOF item. Test-retest reliability for each group of reviewers for the FOF item were also found to be excellent (0.95). Conclusion. The global item is a suitable screening measure for FOF in older adults with ID and can assist in identification of individuals requiring further assessment. Proxies, if carefully selected, can provide consistent and reliable reports of the presence of FOF in people with ID.

Psychometric evaluation of a scale to assess satisfaction with life among people with intellectual disabilities living in community residences

BACKGROUND

In the context of a health intervention among people with intellectual disabilities (ID), there was a need to assess satisfaction with some aspects of life, in order to monitor both potential positive and negative effects of the intervention. The aim of the present study was to develop and evaluate an easily administered scale for assessing satisfaction with home environment and leisure time among people with mild or moderate ID, living in community residences.

METHODS

A number of questions were constructed to measure satisfaction with home environment and leisure time. The questions were answered by 132 adults with mild or moderate ID, living in community residences in Sweden. The dimensionality of the scale was evaluated by factor analysis, and the reliability was estimated using Cronbach's alpha coefficients.

RESULTS

The analysis supported a four-factor solution with 12 items. The four factors were: (I) Satisfaction with housing environment; (II) Satisfaction with life; (III) Satisfaction with meals; and (IV) Satisfaction with recreational activity. The four factors explained almost 70% of the variance in the data set. Cronbach alpha coefficients for all scales were above 0.70, indicating that the reliabilities of the scales were satisfactory. Correlations between the four sub-scales ranged from 0.06 to 0.52, indicating low to moderate inter-correlations between the four sub-scales.

CONCLUSION

The scale has fairly good psychometric properties and is easy to administer. The scale, which can be further improved, can be an important resource in health intervention studies.

Review: a systematic review of quality of life measures for people with intellectual disabilities and challenging behaviours

BACKGROUND

The quality of life (QOL) construct is proposed as a method to assess service outcomes for people utilising disability services. With this in mind, the aim of this study was to conduct a systematic review of available QOL measures for people with intellectual disability (ID) to pinpoint psychometrically sound measures that can be routinely used for service evaluation.

METHOD

A systematic search of the disability literature published between 1980 and 2008 was conducted in order to identify appropriate QOL tools for use within an Australian context. Twenty-four QOL instruments were identified and each instrument was then evaluated against a set of psychometric and measurement criteria.

RESULTS

Six of the instruments examined were deemed to be psychometrically sound on the available information. No instruments were found that specifically assess QOL for people with ID who exhibit challenging behaviour. Most of the instruments assess QOL from a subjective perspective, use a questionnaire format and measure only some (not all) of the eight theoretically accepted domains of QOL.

CONCLUSIONS

More instruments that measure QOL need to be developed and rigorously validated. This is especially the case for high-needs disability populations like those individuals that exhibit challenging behaviour or have severe to profound ID, as it is questionable whether existing measures can be used with these populations.

Comparing residential programmes for adults with autism spectrum disorders and intellectual disability: outcomes of challenging behaviour and quality of life

BACKGROUND

Owing to methodological issues, little research has been conducted to examine quality of life (QoL) as a treatment outcome in autism spectrum disorders (ASD) and intellectual disabilities (ID). This study was conducted to combine QoL measures and objective observations of challenging behaviours (CB) in order to evaluate changes over time in adults with ASD and ID who were treated in two different residential programmes; we hypothesised that a decrease in CB would be related to an improved QoL.

METHOD

In a longitudinal study (45 months), we followed 31 adults with ASD and ID who had been integrated into two residential programmes [Autism Programme with a Structured Method (PAMS) vs. traditional programme for ID (No-PAMS)] for 2-19 years. QoL [Quality of Life Inventory in a Residential Environment (IQVMR)] and severity of autistic features (Childhood Autism Rating Scales) were evaluated annually. CB, as measured by the Aberrant Behaviour Checklist (ABC), including stereotypic behaviour and inappropriate speech, were repeatedly assessed every 3 months.

RESULTS

Observed separately, the groups' results were different. In the PAMS programme, stereotypic behaviour and inappropriate speech (ABC scores) significantly decreased, and the IQVMR total score increased; in contrast, in the comparison group, ABC scores did not change and the IQVMR total score decreased. In all, three mixed-effect ANCOVAs partially confirmed that the PAMS programme had an effect on CB and that QoL improvement did not directly depend on the type of programme but on reducing CB as measured by the ABC.

CONCLUSION

The PAMS programme has a positive and indirect influence on QoL by reducing CB.

Psychometric evaluation of the Dutch version of the Mood, Interest and Pleasure Questionnaire (MIPQ)

Recently, several instruments have been developed to measure the subjective component of the quality of life (QOL) of people with profound intellectual and multiple disabilities (PIMD). A next step, however, must be the further validation of these instruments. The present study aimed at evaluating the psychometric properties of one of these instruments, the Dutch version of the Mood, Interest and Pleasure Questionnaire (MIPQ). The MIPQ is a 25-item Likert scale questionnaire with two subscales (Mood and Interest and Pleasure). The MIPQ and the Aberrant Behavior Checklist were completed on 360 participants with severe or profound intellectual disabilities. About 27% of these participants were included in an examination of test-retest of and the inter-rater reliability of the MIPQ. The results suggest that the proposed two-factor structure did not show an adequate fit to our data. An exploratory factor analysis revealed a three-factor structure with positive mood, negative mood and interest as three correlated but distinct subscales. These results are in concurrence with the literature on positive emotions. High internal consistency (α ≥ .80), high inter-rater (r ≥ .69) and high test-retest reliability (r ≥ .86) were found, which indicates the reliable use of the MIPQ in the population of people with PIMD. Strong negative correlations between the MIPQ total score and the Aberant Behavior Checklist's 'lethargy, social withdrawal' subscale provides some evidence of the construct validity of the MIPQ. However, further validation of the MIPQ including other measures of subjective well-being is warranted.

Psychometric evaluation of a questionnaire to measure the quality of life of people with profound multiple disabilities (QOL-PMD)

Because of a shortage of valid instruments to measure the QOL of people with profound multiple disabilities (PMD), the QOL-PMD was developed. In the present study, possibilities for item reduction as well as the psychometric properties of the questionnaire were examined. One hundred and forty-seven informants of people with PMD participated in the study. Fifty items were removed from the questionnaire on the basis of preset criteria. Internal consistency was good for the total questionnaire as well as for the subscales. Evidence of the construct validity of the questionnaire was found. Correspondence between the groups of informants was moderate. The results of this preliminary analysis of the psychometric properties of the QOL-PMD are encouraging, but further validation of the measure is warranted.

Measuring the quality of life of people with profound multiple disabilities using the QOL-PMD: first results

The present study focused on the objective components of quality of life (QOL) of people with profound multiple disabilities (PMD). More specific, we aimed at evaluating different dimensions of QOL of people with PMD and investigating the association between their QOL and several personal (age, gender, intellectual capabilities, motor limitations, sensory limitations, physical and mental health status) as well as setting characteristics (location of the setting, type of setting, size of the setting, group size, group composition, staffing level and staff turnover). As a measure of the QOL of people with PMD we used the QOL-PMD, a questionnaire that we specifically developed for this purpose. To measure the personal and setting characteristics we also used a self-developed questionnaire. Forty-nine people with PMD were selected. For each of these people three informants were chosen who each filled out the QOL-PMD. To account for the clustered nature of the data, data were analysed by means of mixed models. Characteristics regarding the medical condition of the person with PMD turned out to be most strongly associated with the QOL-PMD scores. Other personal characteristics such as age, gender, motor limitations and sensory limitations did not have a significant effect on the QOL-PMD scores. With regard to the setting characteristics, location of the setting and staffing level turned out to have a significant effect on the QOL-PMD scores.

Day service programmes for people with a severe intellectual disability and quality of life: Parent and staff perspectives

This study focuses on the contributions of a community and campus based day programme to the quality of life of programme participants with a severe level of intellectual disability from the perspective of parents and staff. Qualitative interviews were carried out with parents and staff to explore the contribution that the two programmes had to participants' quality of life in the 6 months since the community based programme began. Schalock and Keith's Quality of Life Questionnaire was administered to supplement the qualitative data. Results indicated that the community based programme contributed more to participants' quality of life over the preceding 6 months than the campus based programme. This study revealed that community based participants' new-found social roles, their hobbies and their work opportunities had a positive effect on their quality of life.

Self-determination, social abilities and the quality of life of people with intellectual disability

BACKGROUND

The international literature has documented that self-determination is impacted by environmental factors, including living or work settings; and by intraindividual factors, including intelligence level, age, gender, social skills and adaptive behaviour. In addition, self-determination has been correlated with improved quality of life (QoL). This study sought to contribute to the growing literature base in this area by examining the relationship among and between personal characteristics, self-determination, social abilities and the environmental living situations of people with intellectual disabilities (ID).

METHODS

The study involved 141 people with ID residing in Italy. Healthcare professionals and social workers who had known participants for at least 1 year completed measures of self-determination, QoL and social skills. Analysis of variance was conducted to verify whether different levels of intellectual impairment were associated with different degrees of the dependent variables. The Pearson product-moment correlation was used to examine any relationships among dependent variables and IQ scores. Finally, discriminant function analysis was used to examine the degree to which IQ score, age, self-determination and social abilities predicted membership in groups that were formed based on living arrangement, and on QoL status (high vs. low).

RESULTS

The anova determined, as expected, that participants with more severe ID showed the lowest levels of self-determination, QoL and social abilities. Discriminant function analysis showed that (a) individuals attending day centres were distinguished from those living in institutions in that they were younger and showed greater autonomy of choice and self-determination in their daily activities; (b) basic social skills and IQ score predicted membership in the high or low QoL groups; and (c) the IQ score predicted membership in the high or low self-determination groups. A manova conducted to examine gender- and age-level differences on self-determination found gender differences; women had higher self-determination scores than men.

CONCLUSIONS

These findings contribute to an emerging knowledge base pertaining to the role of intraindividual and environmental factors in self-determination and QoL. In general, the study replicated findings pertaining to the relative contribution of intelligence to self-determination and QoL, added information about the potential contribution of social abilities, and pointed to the potentially important role of opportunities to make choices as a particularly important aspect of becoming more self-determined, at least in the context of residential settings.

Operationalizing quality of life for people with profound multiple disabilities: a Delphi study

BACKGROUND

In a recent study, we constructed an item pool that contains items on the quality of life (QOL) and related aspects of support of people with profound multiple disabilities (PMD). In the present study, a panel of experts assessed the content and the structure of this item pool in order to enhance its validity and usefulness.

METHOD

A two-round Delphi study was set up. The panel consisted of 45 experts, of whom 12 were theory-experts, 12 practice-experts and 12 experience-experts from Belgium (n = 12), Germany (n = 12), the Netherlands (n = 11) and the UK/Ireland (n = 10). Both quantitative and qualitative methods of analysis were applied to the data.

RESULTS

The majority of the items were considered relevant for the QOL of people with PMD. In the first round, 91% of the items reached the 80% criterion of consensus. In the second round, 78.7% of the items reached the 85% criterion of consensus. There were no significant differences in opinion neither between types of experts nor between countries. Several items were reported as missing in the item pool and were added.

CONCLUSIONS

The results provide some evidence that the item pool is a valid operationalization of QOL of people with PMD and can be used in an instrument to measure the QOL of this target group.

Quality of life in adults with an intellectual disability: the Evaluation of Quality of Life Instrument

BACKGROUND

The construct of quality of life (QoL) has been the focus of a great deal of recent research and has been operationalized in the assessment of the effectiveness of biomedical and rehabilitative interventions. Consequently, the effective measurement of QoL has become a relevant issue. QoL assessment should take account of both objective life conditions and reported satisfaction with those conditions, and should recognize that QoL has multiple domains. There is also evidence to suggest that it is useful to supplement such assessments with the evaluations of significant others within a multidimensional assessment perspective.

METHODS

The current study describes a further stage of testing and refinement of the Evaluation of Quality of Life Instrument (EQLI), which was designed to elicit from staff of health and social care services assessments of the level of satisfaction experienced by adults with an intellectual disability. Specifically, the EQLI's internal consistency, and construct, convergent and discriminant validity were analysed.

RESULTS

The EQLI appears to be a psychometrically valid measure for collecting data on the levels of satisfaction which, according to health and social services staff, might be experienced by individuals with an intellectual disability who attend residential institutions and community-based day centres. The factor analyses supported a three-factor structure for the EQLI and reliability estimates of scores on the three factors were in the moderate to high range. The data collected supported convergent and discriminant validity.

CONCLUSIONS

The results indicate that the EQLI is an effective measure for gaining staff perceptions of individuals who may be at risk of dissatisfaction with various QoL domains. The EQLI is as an instrument which, within a multidimensional assessment, could contribute to the identification of areas of user dissatisfaction with services.

The Resident Choice Scale: a measure to assess opportunities for self-determination in residential settings

BACKGROUND

A 26-item Resident Choice Scale was designed to assess service practices for promoting resident choice.

METHOD

The staff working with 560 UK/Irish adults with intellectual disability were interviewed. Specific examples of practices promoting resident choice were requested and independently rated by the interviewer.

RESULTS

The interrater reliability of Resident Choice items was found to be acceptable (subsample n = 50). The psychometric properties of the Resident Choice Scale total score and scores on eight subscales were also acceptable. Consistently strong associations were found between greater resident choice and greater resident ability and, to a lesser extent, fewer resident challenging behaviours. Few associations were found between resident choice and autism or mental health problems. Even when controlling for resident ability and challenging behaviour, consistent associations were found between greater resident choice and the concurrent variables of greater community presence, fewer institutional practices, and greater user self-reported satisfaction (subsample n = 50).

CONCLUSIONS

Taken together, this pattern of results indicates that the Resident Choice Scale shows promise as a measure of the environmental opportunities available for adults with intellectual disability to exercise self-determination. Areas for future research testing the reliability and validity of the Resident Choice Scale are outlined.

Life satisfaction of people with intellectual disability living in community residences: perceptions of the residents, their parents and staff members

BACKGROUND

Within the literature on quality of life (QoL), life satisfaction (LS) has emerged as a key variable by which to measure perceived well-being, which is referred to as subjective QoL. The LS self-reports of 93 residents with intellectual disability (ID) living in community-based residences were compared with reports about their LS completed by their staff and parents.

METHOD

The residents were interviewed on their LS by social workers who did not belong to the staff of the interviewee's residence. The instrument used was the Life Satisfaction Scale (LSS). Staff and parents completed the short version of the LSS.

RESULTS

Residents and staff's LS reports were positively correlated. However, significant differences were found between these two groups of informants when the residents were characterized as high functioning, had a low score in challenging behaviour, worked in an integrative employment setting and lived in an apartment. As opposed to staff/resident discrepancies, no differences were found between parents' and residents' LS reports.

CONCLUSIONS

If residents cannot to be interviewed about their LS, then the parent is the preferred person to respond on behalf of the resident. The current study highlights the importance of including both objective measures (e.g. functional assessment characteristics) and subjective measures (e.g. LS) in order to get a better understanding of the QoL of people with ID.

Subjective and objective quality of life assessment: responsiveness, response bias, and resident:proxy concordance

Low language ability and response bias are frequently cited as impediments to valid responding to items on interview schedules. Structured interviews with a random sample of 154 adults with mental retardation showed that around two thirds of respondents were either unable to respond or exhibited response bias. There was a significant difference in scores on the Adaptive Behavior Scale between those who exhibited response bias and those who did not. In cases of nonresponse or response bias, the substitution of the respondent with a proxy respondent has been proposed as an alternative method of gathering subjective data. In this study concordance between individuals' responses and those of proxies was low on a subjective measure and high on an objective scale.

Factor stability of the Schalock and Keith (1993) Quality of Life Questionnaire

In the 1990s, there was a significant change in how governments viewed publicly provided services. In the area of disability services, it has been suggested that providers could demonstrate their effectiveness with reference to the quality of life of their clients. One instrument often used in quality of life research for people with intellectual disabilities is the Quality of Life Questionnaire; however, before this instrument can be used with confidence, the reliability of its scores must be demonstrated. We investigated the stability of the four Quality of Life Questionnaire factors over various populations. Three of the four factors were found to be stable. This raises potential concern over the use of the Quality of Life Questionnaire in assessing service providers' effectiveness.

Proxy respondents and the reliability of the Quality of Life Questionnaire Empowerment factor

Previous studies have questioned the reliability of Quality of Life Questionnaire (QOL-Q) Empowerment scores, and reported marked disagreement between consumers' self-reports and proxy data from staff informants. The present study examined agreement between consumer self-reports and proxy responses from community living staff for 63 adults with intellectual disability. Substantial positive correlations between consumers and staff were evident No significant difference was found between total QOL-Q Empowerment scores for self- or staff reports. It was concluded that the QOL-Q Empowerment factor is sufficiently reliable for use both by self-report and proxy respondents. Even so, proxy data are not a substitute for consumer self-reports and the two data sources should not be treated as being interchangeable.