Search results for "External validity"
showing 10 items of 26 documents
Validation of the German version of the Bodily Distress Syndrome 25 checklist in a representative German population sample
2020
Abstract Objective The Bodily Distress Syndrome 25 (BDS 25) checklist is a self-report instrument that can be used for case finding of a BDS in both clinical practice and research. We assessed the reliability and the internal and external validity of the German version of the BDS 25 in a sample of the general German population. Methods The psychometric properties of the BDS 25 German were examined in a representative cross-sectional German population survey which included 2386 persons aged ≥14 years. Validation instruments included the Somatic Symptom Scale 8, the Giessen Subjective Complaints List 8 and the Patient Health Questionnaire 4. Participants were asked if they had been diagnosed …
Internal and external validity of the WHO Well-Being Scale in the elderly general population
1999
The objectives of this study were (i) to evaluate the validity of the WHO Well-Being Scale in elderly subjects and (ii) to assess the influence of demographic variables on subjective quality of life. A sample of 254 elderly subjects completed the 22-item WHO Well-Being Scale. The scale had an adequate internal and external validity. However, the short 10-item and 5-item versions were equally valid. Low scores indicating decreased well-being were related to the presence of a psychiatric disorder or, independently, to poor living conditions. The Well-Being Scale and their short versions would appear to be useful instruments for identifying subjects with reduced subjective quality of life.
French validation of the Stroke Specific Quality of Life Scale (SS-QoL).
2018
To adapt the SS-QoL into French and test its psychometric properties.Seventy-seven patients from a population-based registry were enrolled 3 months after their stroke. SS-QoL, NIHSS score, Barthel index, HAD, FSS, SF-36 scales, and MMSE were administered at enrolment. SS-QoL was re-administered at 15 days and 2 months. Internal consistency was assessed by Cronbach's α coefficients, factorial validity by an exploratory factor analysis and external validity by Mann-Whitney test and Spearman's correlations (ρ), comparing SS-QoL scores with those obtained from established scales. Reliability was assessed by intra-class correlation coefficients (ICC) and responsiveness by standardized effect siz…
Symptom course in inpatient and day clinic treatment of depression: Results from the INDDEP-Study.
2015
Abstract Background In major depression (MDD), hospital treatment is an option in more severe cases or if outpatient treatment failed. Psychosomatic hospitals in Germany provide treatment programs with multimodal psychotherapy, either in an inpatient or a day hospital setting. In the context of health care research, this study aimed (1) to compare characteristics of patients treated in psychosomatic day hospitals and inpatient units, (2) to compare the effectiveness of both treatment modalities. Methods A naturalistic design was chosen to achieve external validity. 604 consecutive patients were assessed at admission, discharge and a 3-month follow-up. Primary outcome was defined as a reduct…
A comprehensive study of automatic program repair on the QuixBugs benchmark
2021
Abstract Automatic program repair papers tend to repeatedly use the same benchmarks. This poses a threat to the external validity of the findings of the program repair research community. In this paper, we perform an empirical study of automatic repair on a benchmark of bugs called QuixBugs, which has been little studied. In this paper, (1) We report on the characteristics of QuixBugs; (2) We study the effectiveness of 10 program repair tools on it; (3) We apply three patch correctness assessment techniques to comprehensively study the presence of overfitting patches in QuixBugs. Our key results are: (1) 16/40 buggy programs in QuixBugs can be repaired with at least a test suite adequate pa…
Automated Patch Assessment for Program Repair at Scale
2021
AbstractIn this paper, we do automatic correctness assessment for patches generated by program repair systems. We consider the human-written patch as ground truth oracle and randomly generate tests based on it, a technique proposed by Shamshiri et al., called Random testing with Ground Truth (RGT) in this paper. We build a curated dataset of 638 patches for Defects4J generated by 14 state-of-the-art repair systems, we evaluate automated patch assessment on this dataset. The results of this study are novel and significant: First, we improve the state of the art performance of automatic patch assessment with RGT by 190% by improving the oracle; Second, we show that RGT is reliable enough to h…
Reliability and Validity of Family Affluence Scale (FAS II) among Adolescents in Beijing, China
2011
This study comprises two sub-studies. Study I assessed the test-retest reliability of Family Affluence Scale (FAS II) items among 95 students aged 11 and 15 years old in Beijing. Study II investigated the completion rate of traditional indicators (parents’ educational level, perceived family wealth, resident area, and school location) measuring socioeconomic status (SES) compared with FAS II, and examined the internal reliability, external and construct validity of the FAS II items in a population of 5876 schoolchildren aged 11, 13 and 15 years old in Beijing. Our study found that the FAS II items have high completion rates (> 99%) which are better than other SES indicators. Analyses of rel…
Psychometric Evaluation of Nursing Professionals Involved in Palliative Care
2017
12 páginas Objetivos: Validar las escalas de Bienestar Psicológico de Ryff en enfermería y relacionarlas con variables clave en calidad de vida laboral. Materiales y método: participaron por encuesta electrónica autoadministrada anónima 433 profesionales, 33.1% profesionales de enfermería (n=123) en quienes nos centramos. Además de sociodemográficos, se recogió información sobre bienestar psicológico, atención consciente, afrontamiento de la muerte y calidad de vida. La validez de constructo fue evaluada con análisis factorial confirmatorio. Se estimó fiabilidad y se recogieron evidencias de validez externa. Resultados: El modelo mostró ajuste adecuado: c2(362) = 438.59 (p = .01), CFI = .98…
External validity of randomized controlled trials in older adults, a systematic review.
2017
Background To critically assess the external validity of randomized controlled trials (RCTs) it is important to know what older adults have been enrolled in the trials. The aim of this systematic review is to study what proportion of trials specifically designed for older patients report on somatic status, physical and mental functioning, social environment and frailty in the patient characteristics. Methods PubMed was searched for articles published in 2012 and only RCTs were included. Articles were further excluded if not conducted with humans or only secondary analyses were reported. A random sample of 10% was drawn. The current review analyzed this random sample and further selected tri…
Psychometric properties of the structured Satisfaction Questionnaire with Gastrostomy Feeding (SAGA-8) for caregivers of children with gastrostomy tu…
2013
BACKGROUND: To analyse the psychometric properties of the structured Satisfaction Questionnaire with Gastrostomy Feeding (SAGA-8) in parents/caregivers of children with home enteral nutrition (HEN) by gastrostomy tube (GT). METHODS: Eighty-six caregivers (mothers) of paediatric patients with HEN by GT were recruited. Patients suffered from neurological disease (61.6%) and other chronic diseases. The SAGA-8 scale, a structured questionnaire to explore satisfaction with HEN by GT, and the Caregiver Burden Inventory (Zarit) were completed. The discriminating power of each of the SAGA-8 items, internal consistency and external validity were evaluated. An exploratory factor analysis and Kaiser-M…