scholarly journals Construct validity and internal consistency of three factor structures and two scoring methods of the 12-item General Health Questionnaire

Biomédica ◽  
2017 ◽  
Vol 37 (3) ◽  
pp. 308 ◽  
Author(s):  
Miguel Simancas-Pallares ◽  
Katherine Margarita Arrieta ◽  
Luisa Leonor Arévalo
Keyword(s):  
Construct Validity ◽  
Internal Consistency ◽  
General Health ◽  
General Health Questionnaire ◽  
Health Questionnaire ◽  
Scoring Methods ◽  
Three Factor

Introducción. El análisis de las propiedades psicométricas de un instrumento reviste importancia para el control de sesgos en la medición.Objetivo. Comparar la validez de constructo y la consistencia interna de tres estructuras factoriales del cuestionario de salud general de 12 ítems.Materiales y métodos. Se hizo un estudio de validación en una muestra anidada de 483 estudiantes de odontología de Cartagena, Colombia. Además de las preguntas del instrumento, se hicieron otras sobre aspectos personales. Se evaluó la validez de constructo de la estructura unidimensional, de la unidimensional con corrección del sesgo de respuesta, y de la de dos y tres factores y sistemas de puntuación del tipo de la escala de Likert (0-1-2-3) y dicotómico (0-0-1-1). La validez se determinó con un análisis factorial confirmatorio y, la consistencia interna, con el coeficiente alfa de Cronbach para la escala de Likert y la fórmula 20 de Kuder-Richardson para el método dicotómico empleando los programas Stata™, versión 13.2 (Stata Corp, USA) y Mplus™, versión 7.11 (Muthen and Muthen, USA).Resultados. Los índices de ajuste revelaron que el mejor modelo era el unidimensional con corrección del sesgo de respuesta y puntación dicotómica (grados de libertad=36; ji al cuadrado=52,432; raíz cuadrada del error medio de aproximación=0,03; IC90% 0,008-0,048; índice comparativo de ajuste=0,982; índice de Tucker-Lewis=0,966). La consistencia interna fue de 0,70.Conclusiones. El ajuste del modelo obtenido en este estudio permitió controlar el sesgo de medición y, así, garantizar la validez externa de los resultados del uestionario de salud general de 12 ítems para la evaluación de las condiciones mentales en esta población. Las propiedades psicométricas de las escalas deben evaluarse críticamente antes del análisis de los resultados.

The Validity of the 12-Item General Health Questionnaire in Australia: A Comparison Between Three Scoring Methods

2001 ◽  
Vol 35 (2) ◽  
pp. 231-235 ◽  
Author(s):  
Susan Donath
Keyword(s):  
Mental Illness ◽  
General Health ◽  
General Health Questionnaire ◽  
Composite International Diagnostic Interview ◽  
Health Practitioner ◽  
Health Questionnaire ◽  
Scoring Methods ◽  
Scoring Method ◽  
Specificity And Sensitivity ◽  
Threshold Score

Objective: To investigate the specificity and sensitivity of three different scoring methods of the 12-item General Health Questionnaire (GHQ-12) and hence to determine the best GHQ-12 threshold score for the detection of mental illness in community settings in Australia. Method: Secondary data analysis of the 1997 Australian National Survey of Health and Wellbeing (n = 10 641), using the Composite International Diagnostic Interview as the gold standard for diagnosis of mental illness. Results: The area under the Receiver Operating Characteristic (ROC) curve for the C-GHQ scoring method was 0.84 (95% CI = 0.83–0.86) compared with the area for the standard scoring method of 0.78 (95% CI = 0.76–0.80). The best threshold with C-GHQ was 3/4, with sensitivity 82.9% (95% CI = 80.2–85.5%) and specificity 69.0% (95% CI = 68.6–69.4%). The best threshold score with the standard scoring method was 0/1, with sensitivity 75.4% (95% CI = 72.5–78.4%) and specificity 69.9% (95% CI = 69.5–70.3%). These were also the best thresholds for a subsample of the population who had consulted a health practitioner in the previous 4 weeks. Conclusion: In the Australian setting, the C-GHQ scoring method is preferable to the standard method of scoring the GHQ-12. In Australia the GHQ-12 appears to be a less useful instrument for detecting mental illness than in many other countries.

Construct Validity of the Adolescent Resilience Scale

2003 ◽  
Vol 93 (3_suppl) ◽  
pp. 1217-1222 ◽  
Author(s):  
Atsushi Oshio ◽  
Hitoshi Kaneko ◽  
Shinji Nagamine ◽  
Motoyuki Nakaya
Keyword(s):  
Construct Validity ◽  
Life Events ◽  
Undergraduate Students ◽  
General Health ◽  
Negative Life Events ◽  
General Health Questionnaire ◽  
Health Questionnaire ◽  
Resilience Scale ◽  
Mean Differences ◽  
Psychological Features

The aim of this study was to assess the construct validity of the Adolescent Resilience Scale which measures the psychological features of resilient individuals. Research involving this scale, the Negative Life Events Scale, and the General Health Questionnaire was conducted with a group of 207 Japanese undergraduate students (104 men and 103 women; M age = 20.2 yr., SD =.9). A cluster analysis for the Negative Life Events Scale and General Health Questionnaire yielded three clusters: (1) mentally healthy with little experience of Negative Life Events, (2) poorer mental health with many experiences of Negative Life Events, (3) mentally healthy despite many experiences of Negative Life Events. These three groups were defined as (1) Well Adjusted, (2) Vulnerable, and (3) Resilient, respectively. Mean differences in scores on the Adolescent Resilience Scale among the three groups were subjected to one-way analysis of variance. The mean scores of both the Well Adjusted and Resilient groups were higher than that of the Vulnerable group, and therefore support the construct validity of the Adolescent Resilience Scale.

The validity of three different versions of the general health questionnaire among general hospital inpatients

2011 ◽  
Vol 26 (S2) ◽  
pp. 536-536
Author(s):  
F. Friedrich ◽  
R. Alexandrowicz ◽  
N. Benda ◽  
M. Krautgartner ◽  
G. Cerny ◽  
...  
Keyword(s):  
General Hospital ◽  
General Health ◽  
General Health Questionnaire ◽  
Health Questionnaire ◽  
Scoring Methods ◽  
Scoring Method ◽  
Final Sample ◽  
Validity Indices ◽  
Research Interview ◽  
Hospital Inpatients

ObjectiveOriginally, the General Health Questionnaire (= GHQ) was designed to detect mental disorders among general medical outpatients and in community. The aim of the present survey is to compare the criterion validity indices of three different GHQ versions among general hospital inpatients when using different scoring methods.MethodThe GHQ-30 was filled in by inpatients prior to the research interview. For psychiatric case-identifiation the Clinical Interview Schedule was performed by three research psychiatrists.ResultsThe final sample consisted of 993 inpatients. When comparing the three different GHQ-versions, no significant differences were found in OMR and ROC-AUC as well as in sensitivity (0,612–0,701) and specificity (0,601–0759). When comparing the four scoring methods no significant differences were found in sensitivity. By contrast, OMR and specificity showed better indices for the 20 item and 12 item GHQ versions when using the bimodal and modified Lickert scoring method. Further, the Lickert scoring method showed no significant differences to the other scoring methods for the GHQ-30, where as the modified Lickert and the bimodal method showed lower OMR and higher specificity compared to the chronic method.ConclusionDue to the results of this survey, the future use of the chronic scoring method for the GHQ has to be questioned when used for general hospital inpatients.

Factorial structure of the general health questionnaire (GHQ-30) among psychiatric and somatic patients

2011 ◽  
Vol 26 (S2) ◽  
pp. 537-537
Author(s):  
D. Frydecka ◽  
K. Malyszczak ◽  
A. Chachaj ◽  
A. Kiejna
Keyword(s):  
Factor Structure ◽  
Internal Consistency ◽  
General Health ◽  
Psychiatric Patients ◽  
General Health Questionnaire ◽  
Global Scale ◽  
Interpersonal Functioning ◽  
Health Questionnaire ◽  
Two Factors ◽  
General Coping

BackgroundThe Goldberg's 30-item General Health Questionnaire (GHQ-30) is used as a screening instrument for psychological distress in the general population. GHQ-30 has been widely used as a unitary measure, but several underlying factors have been identified in previous studies based on factor analyses.AimTo analyze the internal consistency and the factor structure of the Polish version of GHQ-30 in the group of somatic and psychiatric patients’ subpopulations. Differences in factor structure among those two groups might have important implications for how the test is used in those populations.MethodsA total of 1473 patients (807 psychiatric and 666 somatic) were included into the study. A total score was calculated with Likert method. The principal factor analysis with orthogonal varimax normalized rotation was used for the factor extraction.ResultsThe GHQ-30 was found to have high internal consistency. The factorial analysis conducted for the whole group, as well as for psychiatric and somatic patients separately, showed that two factors labeled as followed can be abstracted from the global scale: “depression and anxiety” and “interpersonal functioning and general coping”. These factors jointly account for 54,2% – 62,3% of the variance.ConclusionsResults showed that GHQ-30 may be used both as a unitary measure using full-scale sores and allows to get more detailed information about individual's intra- and interpersonal functioning.

Exploratory Factor Analysis and Psychometric Properties of the General Health Questionnaire in Spanish Adolescents

2010 ◽  
Vol 107 (1) ◽  
pp. 120-126 ◽  
Author(s):  
A. López-Castedo ◽  
J. Domínguez
Keyword(s):  
Factor Analysis ◽  
Exploratory Factor Analysis ◽  
Internal Consistency ◽  
General Health ◽  
General Health Questionnaire ◽  
Temporal Stability ◽  
Health Questionnaire ◽  
Health Measure ◽  
Global Quality ◽  
Mental Health Measure

The aim of this study was to assess the homogeneity of items, reliability as a metric indicator of global quality (internal consistency and temporal stability), and the exploratory factor structure of the General Health Questionnaire-28 (GHQ-28) in a sample of 2,010 Spanish adolescents. Mean age was 15.9 yr. (range 14-19, SD = 2.1). The test was administered twice with 20 days between responses. Answers were scored on a Likert-type scale. The internal consistency and test-retest reliabilities obtained were .93 and .94. In exploratory factor analysis, four factors explained 52.7% of the variance. These results indicated that the GHQ-28 is a psychometrically sound mental health measure in Spanish adolescents.

scholarly journals Validity and reliability of the Norwegian version of the Musculoskeletal Health Questionnaire in people on sick leave

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Alexander Tingulstad ◽  
Maurits W. Van Tulder ◽  
Tarjei Rysstad ◽  
Anne Therese Tveter ◽  
Jonathan C. Hill ◽  
...  
Keyword(s):  
Construct Validity ◽  
Sick Leave ◽  
Musculoskeletal Disorders ◽  
Internal Consistency ◽  
Health Questionnaire ◽  
Validity And Reliability ◽  
Musculoskeletal Health ◽  
Norwegian Version ◽  
Test Retest Reliability ◽  
Three Factor

Abstract Background The Musculoskeletal Health Questionnaire (MSK-HQ) is a recently developed generic questionnaire that consists of 14 items assessing health status in people with musculoskeletal disorders. The objective was to translate and cross-culturally adapt the MSK-HQ into Norwegian and to examine its construct validity and reliability in people on sick leave with musculoskeletal disorders. Methods A prospective cohort study was carried out in Norway on people between 18 and 67 years of age and sick leave due to a musculoskeletal disorder. The participants were recruited through the Norwegian Labour and Welfare Administration during November 2018–January 2019 and responded to the MSK-HQ at inclusion and after four weeks. Internal consistency was assessed by Cronbach’s alpha, and structural validity with a factor analysis. Construct validity was assessed by eight “a priori” defined hypotheses regarding correlations between the MSK-HQ and other reference scales. Correlations were analyzed by Spearman’s- or Pearson’s correlation coefficient and interpreted as high with values ≥ 0.50, moderate between 0.30–0.49, and low < 0.29. Reliability was tested with test–retest, standard error of measurement (SEM) and smallest detectable change (SDC). Results A total of 549 patients, mean age (SD) 48.6 (10.7), 309 women (56.3%), were included. The mean (SD) MSK-HQ sum scores (min–max 3–56) were 27.7 (8.2). Internal consistency was 0.86 and a three-factor structure was determined by factor analysis. Construct validity was supported by the confirmation of all hypotheses; high correlation with HRQOL, psychosocial risk profile, and self-perceived health; moderate correlation with physical activity, self-perceived work ability, and work presenteeism; and low correlation with the number of sick days. The test–retest reliability was good with an intraclass correlation coefficient of 0.83 (95% CI, 0.74–0.89), SEM was 2.3 and SDC 6.5. Conclusions The Norwegian version of the MSK-HQ demonstrated high internal consistency, a three-factor structure, good construct validity and good test–retest reliability when used among people on sick leave due to musculoskeletal disorders.

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