Satisfaction Ratings of QOLPAV: Psychometric Properties Based on the Graded Response Model

A scale measuring quality of life (QOL) is important in adolescent research. Using the graded response model (GRM), this study evaluates the psychometric properties of the satisfaction ratings of the Quality of Life Profile Adolescent Version (QOLPAV). Data for 1,392 adolescents were used to check IRT assumptions such as unidimensionality and local item dependence (LID). The goodness of fit of the GRM to the data and the item characteristic curves were evaluated. The reliability and validity analyses included item/test information, Cronbach’s α, and convergent and discriminant validity. Differential item functioning (DIF) procedures were also performed to detect item bias. The results provide evidence that the items sufficiently measured one single dimension. Few pairs of questions were flagged as LID due to content or wording similarity. Five items did not fit the GRM, and 4 were low in item discrimination. The findings also suggest that the assessment had appropriate reliability and validity. The DIF impact on the assessment score was considered minor. Because QOLPAV includes a respondent’s perceived importance of various life aspects, a short form that only considers important life aspects in the overall QOL estimation for each respondent becomes feasible within the framework of IRT. Future studies focusing on the development of a QOL overall index using the items from QOLPAV are recommended.     

A human ecological approach to quality of life: Conceptual framework and results of a preliminary study

A human ecological framework for study of quality of life is proposed and used in the study of the QOL of a rural sample in northern Michigan. The framework is based on an ecosystem, i.e., the interaction of humans, the environed units, with their interrelated environments. These are conceptualized as: natural, human constructed and human behavioral. Quality of life indicators can measure aspects of the environed units, environments, and their interaction. Scales to measure perceived overall quality of life (POQL), community satisfaction (COMSAT), and the importance of and satisfaction with selected life concerns (SALI and SALS) were used. The life concerns represented human needs, attributes of the self, conditions and resources of the three environments, or implied interaction with or action upon the environment. Objectives were to study how these life concerns contributed to POQL; the relationship between SALI and SALS ratings and how this influenced POQL; the relationship between COMSAT and POQL; and whether or not satisfaction with these two variables varied by demographic characteristics. A relatively high POQL was found; those with higher incomes and children living at home had higher scores. COMSAT was also generally high, but did not vary by demographic characteristics. POQL and COMSAT were significantly related. Family life, health, safety, house, and financial security ranked highest in importance; clothing, spare time activities, and fun ranked lowest. Family life, religious faith, food work, and safety ranked highest in satisfaction; national government, financial security, developing oneself, health, and an interesting life ranked the lowest. The various life concerns appear) to behave differently in regard to how the discrepancy between importance of a concern and satisfaction with it influences overall quality of life. Satisfaction with accomplishments, family life, work and financial security accounted for over half the variance in POQL. These represent essential human needs which are satisfied with resources of the near environment, suggesting the salience of one's most proximate environment to evaluation of quality of life. Findings, while preliminary, illustrate the viability of a human ecological model as a unifying framework for conceptualization and measurement of quality of life. Further specification and elaboration of the model are indicated.     

Measuring Quality of Life

This paper considers quality of life (QOL) to be a global, yet unidimensional, subjective assessment of one's satisfaction with life. This conceptualization is consistent with viewing QOL assessments as resulting from the interaction of multiple causal dimensions, but it is inconsistent with proposals to limit QOL to health-related quality of life (HRQOL). We test the unidimensional yet global conceptualization of QOL using data from coronary artery bypass graft (CABG) patients. The Self-Anchoring Striving Scale (SASS) and four other indicators derived from the literature, all seemed to function as indicators of a single concept (QOL) that was repeatedly drawn upon as the patients determined their responses to these indicators. However, only about half the variance in each indicator was attributable to that common QOL source. Several structural equation models are used to assess whether the superior performance of the Life 3 indicator is an artifact of the repetition of an item within this indicator. The data convincingly indicate that the superior performance is not a memory artifact, and that even the repetition of an identically worded item prodded the patients into drawing yet again upon the same QOL factor that grounded all the other measures.     

Evaluating Item Discrimination Power of WHOQOL-BREF from an Item Response Model Perspectives

Quality of life (QOL) has become an important component of health. By using the methodology of psychometric theory, we examine the item properties of the WHOQOL-BRIEF. Samejima’s graded response model with natural metrics of the logistic response function was fitted. The results showed items with negative natures were less discriminating. Items written in a specific way were more suitable to assess certain subgroups. The national items showed variation in discriminatory power. Questions measuring objective and specific issues performed worse than items assessing general aspects of the QOL.     

The perceived quality of life in Norway: Regional variations and contextual effects

This article deals with perceived quality of life and its relationship to sociodemographic background variables in Norway. We try to answer two questions, viz (1) to what extent does the absolute level of quality of life as well as the relationships between quality of life and individual-level sociodemographic variables vary between Norwegian counties? and (2) are such variations related to specific characteristics of the various counties? Some between-county variation is found, but in most cases the pattern of variation is not replicated across surveys. For variation in the absolute level of QOL as well as in the relationship between an individual's education and QOL, however, there is a moderate degree of stability. Contextual analyses show that the relationship between education and QOL is positive and moderately strong in affluent counties, near zero or negative in economically more backward areas. The results are interpreted within the framework of a person-environment fit model.     

Do We Need to Weight Item Satisfaction by Item Importance? A Perspective from Locke’s Range-Of-Affect Hypothesis

Importance weighting is a common idea in quality of life (QOL) measurement. Based on the common idea that important domains should have more contributions to individuals’ QOL total score, the weighting procedure of multiplying item satisfaction by item importance was adopted in many QOL instruments. However, in Locke’s [1969, Organizational Behavior and Human Performance 4, pp. 309–336; 1976, in: M.D. Dunnette (eds.), Handbook of Industrial and Organizational Psychology (Rand McNally, Chicago), pp. 1297–1343] range-of-affect hypothesis, he indicated that the satisfaction evaluation of an item was determined by the have–want discrepancy, importance and their interaction (discrepancy × importance), implying that item satisfaction has incorporated the judgment of item importance, therefore, weighting an item satisfaction score with an item importance score is unnecessary. The purpose of this study was to examine the range-of-affect hypothesis in the context of QOL research. Three hundred and thirty two undergraduate students at National Taiwan University (NTU) participated in the study. Item satisfaction, importance and perceived have–want discrepancy were measured for 12 different life-area items. Global life satisfaction was measured as well. Regression analysis results showed that item importance and perceived have–want discrepancy have a significant interaction effect on item satisfaction, supporting Locke’s range-of-affect hypothesis. In addition, regression analysis results also showed that item importance and item satisfaction did not have a significant interaction effect on global satisfaction, suggesting that weighting item satisfaction score by item importance value does not have advantages in predicting global satisfaction. In a summary, the findings revealed that item satisfaction has incorporated the judgment of item importance, and, thus, the procedure of importance weighting on item satisfaction is unnecessary.     

Quality of Life Measurement in the Field of Intellectual Disabilities: Eight Principles for Assessing Quality of Life-Related Personal Outcomes

As the concept of quality of life (QOL) has evolved from a theoretical concept to both a measurable construct and an action-oriented change agent in the field of intellectual disabilities, there has emerged a corresponding need to develop, implement, and use a systematic approach to the assessment of domain-referenced quality of life outcomes. The purpose of this article is to suggest eight principles based on published literature and the authors’ experiences that should underlie the assessment of QOL-related personal outcomes in the field of intellectual disabilities. Data from the development of the personal outcomes scale are used to exemplify each principle. The article’s premise is that model development and test construction should work in tandem, and that a ‘quality of life assessment instrument’ should be based on an empirically derived QOL conceptual and measurement framework/model.     

Further Validation of the Sirgy et al.'s Measure of Community Quality of Life

Sirgy et al. (2000) have developed a measure ofcommunity quality of life (QOL). This measurecaptures residents' satisfaction withcommunity-based services in the way that theseservices contribute to global satisfaction withthe community and overall life satisfaction. The measure was validated nomologically bytesting hypotheses directly deduced from atheoretical model that relates residents'satisfaction with community-based services withglobal community satisfaction and global lifesatisfaction. The study reported in this paperreplicates and extends Sirgy et al.'s (2000)study. Specifically, the conceptual model thatwas used to test the nomological (predictive)validity of the community QOL measure wasfurther expanded and refined. The modifiedmeasure is based on the theoretical notion thatsatisfaction with the community at large(global community satisfaction) is mostlydetermined by satisfaction with governmentservices (police, fire/rescue, library, etc.),business services (banking/savings, insurance,department stores, etc.), nonprofit services(alcohol/drug abuse services, crisisintervention, religious services, etc.), aswell as satisfaction with other aspects of thecommunity such as quality of the environment,rate of change to the natural landscape, racerelations, cost of living, crime, ties withpeople, neighborhood, and housing. In turn,global community satisfaction together withsatisfaction with other overall life domains(work, family, leisure, etc.) affect globallife satisfaction. Survey data from a varietyof communities located in southwest Virginiawere collected to further test the nomologicalvalidity of the measure. The results providedadditional nomological validation support tothe community QOL measure.     

Examining the appropriateness of importance weighting on satisfaction score from range-of-affect hypothesis: hierarchical linear modeling for within-subject data

This study examines the range-of-affect hypothesis in a within-subject context using the weighting situation faced in quality of life (QOL) measurement. Data collected in Wu and Yao’s (2006b) study were used (332 undergraduates at National Taiwan University). The mean age was 19.80 years (std = 1.98). They completed a QOL questionnaire and indicated satisfaction, importance, and perceived have–want discrepancy on 12 life domains. Hierarchical linear modeling with a random-coefficients regression model was applied. At the first level (within-individual level), the satisfaction scores for each item were regressed on the have-want discrepancy, importance, and the interaction between have-want discrepancy and importance (have-want discrepancy ×  importance) of the same item. At the second level (between-individual level), the intercept, coefficients of have-want discrepancy, importance and the interaction between have-want discrepancy and importance at the first level were regarded as varying randomly over all participants. Results of this study supported the range-of-affect hypothesis, showing that the relationship between item have-want discrepancy and item satisfaction is stronger for high importance items than low importance items for a given individual. Implications for important weighting on item satisfaction scores were discussed.     

Do We Need to Weight Satisfaction Scores with Importance Ratings in Measuring Quality of Life?

Trauer and Mackinnon (2001; Quality of life research 10, pp. 579–585) recently proposed that weighting satisfaction scores by importance ratings in measuring quality of life is undesirable and unnecessary. However, they didn’t use empirical data to support their claim. In this study, different weighting algorithms developed by Cummins (1997; Comprehensive Quality of Life Scale – Adult: Manual [Deakin, University Australia]), Raphael et al. (1996; Journal of Adolescent Health 19, pp. 366–375), Ferrans and Powers (1985; Advances in Nursing Science 8, pp. 15–24) and Frisch (1992; Comprehensive Casebook of Cognitive Therapy [Plenum Press, New York]) for measuring quality of life (QOL) were applied. Weighted scores computed from these weighting algorithms were compared with unweighted scores in predicting a global life satisfaction measure by correlation and moderated regression analyses. One hundred and thirty undergraduate students at National Taiwan University participated in the study voluntarily. They completed a 15-item questionnaire on quality of campus life developed by the authors. They also completed the Satisfaction with Life Scale (SWLS), a global life satisfaction measure developed by Diener et al. (1985; Journal of Personality Assessment 49, pp. 71–75). The correlation results revealed that the weighted scores computed from different algorithms didn’t have higher correlations to the SWLS than the unweighted scores. The moderated regression results also revealed that item importance did not moderate the relationship between item satisfaction and the overall life satisfaction. All these findings revealed that weighting satisfaction with importance is unnecessary. This paper was a part of the first author’s Master Thesis     

Urban Quality of Life: A Case Study of Guwahati

This paper studies quality of life (QOL) in urban environment. The term environment has been used in broader sense, which includes physical, social and economic environment. A framework has been proposed which posits that QOL comprises objective condition of living and satisfaction from such living condition constitutes QOL. Such objective condition refers to objective QOL and satisfaction refers to subjective QOL. Dimension of QOL has been found to be multi dimensional. It has been found that both objective and subjective condition is important dimension of QOL. But correlation between objective and subjective QOL has been found not to be high. At the same time it has been found that satisfaction from condition of traffic is the lowest among all satisfaction variables.     

Spiritual well-being: A neglected subject in quality of life research

The social indicators and quality of life (QOL) movements have given scant attention to religiosity, in spite of theoretical and empirical evidence that it is related to personal and social well-being. Reasons for this include the constitutional provisions pertinent to religion, problems of funding, the lack of measuring instruments, conceptual and theoretical difficulties, biases of researchers, and the lack of consensus regarding the definition of QOL. A partial solution to this neglec is to engage in conceptual, theoretical, qualitative, and empirical research on spiritual well-being (SWB). The authors indicate its potential and some initial steps toward bringing SWB into the QOL movement.     

Quality of Life in Cities: Setting up Criteria for Amman-Jordan

In recent years, the interest grew in research on measuring the “quality of life” (QOL) in cities. This interest comes from the success QOL measurement achieved in understanding communities’ needs, tracking changes in different aspects of life and assessing the most desired types of future development among citizens. This research highlights the importance of measuring QOL in Jordan. It examines the opportunity and applicability of carrying out QOL measurement studies in Amman, the capital city. It outlines different scopes, visions and approaches that can be used to study and measure QOL and the most suitable mechanism that can work firmly. A professional top–bottom approach was used for that. Thirty-three experts with different backgrounds were interviewed in order to determine the appropriate scopes and visions for studying QOL, define the most significant aspects affecting QOL in Amman, and define the appropriate domains to be studied. Results were analyzed, limitations were defined and the final set of representative domains was stated. Domains were ranked according to their relevance and the important -underneath- aspects were defined in the form of models, each representing a certain domain. The paper attempts by the end to set the stage for setting up criteria for measuring QOL in Amman and to open the way for future QOL research to take place in Jordan.     

Can We Weight Satisfaction Score with Importance Ranks Across Life Domains?

The main purpose of this study was to investigate the utility of importance weighting when importance ranks were considered as the weighting values by (1) examining the range-of-affect hypothesis in the within-subject context and (2) comparing performances of weighted and unweighted satisfaction scores in predicting overall judgment of subjective well-being. Participants were 167 undergraduates at National Taiwan University. The mean age was 19.80 years (SD = 1.98). They were first asked to complete the measurements for global life satisfaction and overall QOL and then completed a QOL questionnaire for rating satisfaction, perceived have–want discrepancy on 12 life domains and ranking importance on these domains. Hierarchical linear modeling with a random-coefficients regression model was applied to examine the range-of-affect hypothesis in the within-subject context. Correlation analysis was applied to evaluate performances of weighted and unweighted satisfaction scores in predicting overall judgment of subjective well-being. Results of this study supported the range-of-affect hypothesis, showing that the relationship between item have–want discrepancy and item satisfaction is stronger for high importance items than low importance items for a given individual. Correlation analysis found that the four weighted satisfaction scores computed from the algorithms proposed by Hsieh (Social Indicators Research 61:227–240, 2003) were not superior to unweighted satisfaction score in predicting overall QOL and global life satisfaction. All these findings suggested that weighting satisfaction scores with importance ranks may not have theoretical basis and empirical contribution.     

A value based index for measuring national quality of life

A new index of the quality of life (QOL) of nations was created. The measured variables are selected based on a universal set of human values derived from the work of Schwartz (1994). The Basic QOL Index, designed primarily to discriminate between developing countries, includes seven variables: purchasing power, homicide rate, fulfillment of basic physical needs, suicide rate, literacy rate, gross human rights violations, and deforestation. The Advanced QOL Index, designed primarily to assess QOL in highly industrialized nations, includes seven variables: physicians per capita, savings rate, per capita income, subjective well-being, percent attending college, income equality, and environmental treaties signed. Combining the two indices produced a reliable measure of QOL that systematically covers diverse human values. The nations scoring highest on the Combined QOL Index were Canada, Switzerland, Netherlands, U.S.A., and Norway, and those scoring lowest were Ethiopia and Rwanda.     

How Neighborhood Features Affect Quality of Life

In this paper we report on the development ofthree conceptual models that explain howsatisfaction with neighborhood features affectresidents' quality of life (life satisfaction). The first model posits that satisfaction withsocial, economic, and physical features of theneighborhood affects life satisfaction throughthe mediation effect of one's overall feelingstoward the neighborhood. That is, satisfactionwith the social, economic, and physicalfeatures tend to contribute to one's overallsatisfaction with the neighborhood(neighborhood satisfaction), which in turnplays a positive role in overall feelingstoward life (life satisfaction). Survey datafrom a variety of communities located insouthwest Virginia were collected, and the datafailed to provide support to this model. The second model posits that satisfaction withthe neighborhood features (social, economic,and physical) does affect life satisfactionthrough a hierarchy-of-satisfaction effects –satisfaction with the neighborhood featuresimpacts neighborhood satisfaction, which inturn affects community satisfaction and housingsatisfaction. Housing satisfaction, in turn,affects home satisfaction. Both homesatisfaction and community satisfaction, inturn, affect life satisfaction. The surveydata failed to support this model too. The third model posits that satisfaction withdifferent features of the neighborhood (social,economic, and physical) affect different domainsatisfactions, which in turn affect lifesatisfaction. Specifically, the model arguesthat satisfaction with the physical featuresaffects both neighborhood satisfaction andhousing satisfaction. Neighborhoodsatisfaction plays a role in communitysatisfaction, whereas housing satisfactionplays a role in home satisfaction. Bothcommunity satisfaction and home satisfaction,in turn, play a role in life satisfaction. Satisfaction with the social features of theneighborhood plays a role in the satisfactionwith the neighborhood and the community – thelatter feeds into life satisfaction. Satisfaction with the economic features of theneighborhood plays a role in the satisfactionwith the house and home – the latter feeds intolife satisfaction. The data were mostly supportive of this model.     

Impact of Acts of Discrimination on Quality of Life Among Injecting Drug Users in Delhi, India

The study examines the association between quality of life (QOL) and discrimination perpetrated against a vulnerable population like injecting drug users (IDU). Given that QOL affects self efficacy which in turn affects behavior, it is relevant to examine QOL among IDUs in the context of HIV prevention, and to study whether discriminations and human rights abuses impact QOL in this population. A cross sectional study was conducted in two research sites in Delhi, India among 343 IDUs recruited through a respondent driven sampling. A Hindi version of the WHOQOL Bref survey along with a survey questionnaire of discrimination were used to interview participants. After controlling for demographic characteristics, experiencing physical and verbal abuse (OR: 0.46, CI 0.27–0.79),arrests and imprisonment for carrying needles and/or using drugs (OR: 0.53, CI 0.31–0.90) and lacking health information (OR: 0.49, CI 0.29–0.85)was associated with lower social QOL, while being denied health care services was associated with lower psychological QOL. The more discrimination experienced, the lower was the quality of life in the social and psychological domains. Participants’ perceived well being in the four domains was related to their living conditions, discriminatory acts and to perceptions of social support. Discriminatory acts and abuses appeared to have a greater toll on their psychological well being and social relationships, thus indicating the need for human rights advocacy in order to influence law enforcement practices and to reduce stigma, while expanding social support through an extended comprehensive IDU programme.     

Correlates of Quality of Life in New Migrants to Hong Kong from Mainland China

The concept of Quality of life (QOL) has received considerable attention from different disciplines. The aim of this study was to identify what are the correlates of QOL among Chinese new immigrants in Hong Kong. Data were collected through a cross-sectional survey among 449 Hong Kong new immigrants from Mainland China. Bivariate and multiple regression analyses were performed to examine the association between immigrants’ QOL and their demographic characteristics, socio-economic factors, optimism, sense of control, perceived social support, perceived neighborhood disorder, collective efficacy, pre-migration planning, depressive symptoms and acculturation stress. Our findings demonstrated that depressive symptom is the most prominent factor in reducing immigrants’ level of QOL, perceived social support and optimism are the two important factors that enhance the QOL of these depressed immigrants. Our results indicate that preventive measures must be developed, and professional counseling and psychological support services must be provided to new immigrants in Hong Kong, especially those who have depressive symptoms.     

Quality of life as a concept and measurable entity

This chapter proposes that “quality of life” (QOL) is a multidimensional concept, the measurement of which must contain objective elements of a person's life. It is further suggested that in the development of QOL measurement instruments the selection of items must be influenced significantly by the views of the population under study. Instruments to measure quality of life have been flawed owing to their inadequate conceptual bases and the attempts to utilise general measures which are often the “broad brush” to detect changes in disease specific situations. The chapter outlines conceptual approaches to quality of life and provides an analysis of a range of definitions. It provides an overview of a number of approaches to measure QOL in specific populations. Finally, it addresses some of the potential uses and abuses involved in the measurement of QOL. The whole of science is nothing more than a refinement of everyday thinking. (Albert Einstein, 1950, p. 59)      

影响西部地区城市居民生活质量的因素分析——以兰州市为例

本文通过运用多种统计方法分析兰州城市居民生活质量调查数据,探讨影响兰州城市居民生活质量的主要因素。该研究结果表明,在与兰州城市居民生活质量相关的各种因素中,经济生活满意度、文化程度、物质生活设备、健康状况以及养老保障是主要影响因素。本文最后通过总结和讨论,进一步指出城市居民生活质量还应把关注点拓宽至微观因素、观念因素等方面的内容。