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Development of a Microsoft Excel tool for applying a factor retention criterion of a dimension coefficient to a survey on patient safety culture.

ABSTRACT: Many quality-of-life studies have been conducted in healthcare settings, but few have used Microsoft Excel to incorporate Cronbach's ? with dimension coefficient (DC) for describing a scale's characteristics. To present a computer module that can report a scale's validity, we manipulated datasets to verify a DC that can be used as a factor retention criterion for demonstrating its usefulness in a patient safety culture survey (PSC).Microsoft Excel Visual Basic for Applications was used to design a computer module for simulating 2000 datasets fitting the Rasch rating scale model. The datasets consisted of (i) five dual correlation coefficients (correl. = 0.3, 0.5, 0.7, 0.9, and 1.0) on two latent traits (i.e., true scores) following a normal distribution and responses to their respective 1/3 and 2/3 items in length; (ii) 20 scenarios of item lengths from 5 to 100; and (iii) 20 sample sizes from 50 to 1000. Each item containing 5-point polytomous responses was uniformly distributed in difficulty across a ± 2 logit range. Three methods (i.e., dimension interrelation ?0.7, Horn's parallel analysis (PA) 95% confidence interval, and individual random eigenvalues) were used for determining one factor to retain. DC refers to the binary classification (1 as one factor and 0 as many factors) used for examining accuracy with the indicators sensitivity, specificity, and area under receiver operating characteristic curve (AUC). The scale's reliability and DC were simultaneously calculated for each simulative dataset. PSC real data were demonstrated with DC to interpret reports of the unit-based construct validity using the author-made MS Excel module.The DC method presented accurate sensitivity (=0.96), specificity (=0.92) with a DC criterion (?0.70), and AUC (=0.98) that were higher than those of the two PA methods. PA combined with DC yielded good sensitivity (=0.96), specificity (=1.0) with a DC criterion (?0.70), and AUC (=0.99).Advances in computer technology may enable healthcare users familiar with MS Excel to apply DC as a factor retention criterion for determining a scale's unidimensionality and evaluating a scale's quality.

SUBMITTER: Chien TW

PROVIDER: S-EPMC5658999 | biostudies-other | 2017 Oct

REPOSITORIES: biostudies-other

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Development of a Microsoft Excel tool for applying a factor retention criterion of a dimension coefficient to a survey on patient safety culture.

Chien Tsair-Wei TW Shao Yang Y Jen Dong-Hui DH

Health and quality of life outcomes 20171027 1

<h4>Background</h4>Many quality-of-life studies have been conducted in healthcare settings, but few have used Microsoft Excel to incorporate Cronbach's α with dimension coefficient (DC) for describing a scale's characteristics. To present a computer module that can report a scale's validity, we manipulated datasets to verify a DC that can be used as a factor retention criterion for demonstrating its usefulness in a patient safety culture survey (PSC).<h4>Methods</h4>Microsoft Excel Visual Basic ...[more]

PMID: 29078778

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Project description:The Agency for Healthcare Research and Quality (AHRQ) Hospital Survey on Patient Safety Culture was designed to assess staff views on patient safety culture in hospital settings. The purpose of this study was to examine the multilevel psychometric properties of the survey.Survey data from 331 U.S. hospitals with 2,267 hospital units and 50,513 respondents were analyzed to examine the psychometric properties of the survey's items and composites. Item factor loadings, intraclass correlations (ICCs), design effects, internal consistency reliabilities, and multilevel confirmatory factor analyses (MCFA) were examined as well as intercorrelations among the survey's composites.Psychometric analyses confirmed the multilevel nature of the data at the individual, unit and hospital levels of analysis. Results provided overall evidence supporting the 12 dimensions and 42 items included in the AHRQ Hospital Survey on Patient Safety Culture as having acceptable psychometric properties at all levels of analysis, with a few exceptions. The Staffing composite fell slightly below cutoffs in a number of areas, but is conceptually important given its impact on patient safety. In addition, one hospital-level model fit indicator for the Supervisor/Manager Expectations & Actions Promoting Patient Safety composite was low (CFI = .82), but all other psychometrics for this scale were good. Average dimension intercorrelations were moderate at .42 at the individual level, .50 at the unit level, and .56 at the hospital level.Psychometric analyses conducted on a very large database of hospitals provided overall support for the patient safety culture dimensions and items included in the AHRQ Hospital Survey on Patient Safety Culture. The survey's items and dimensions overall are psychometrically sound at the individual, unit, and hospital levels of analysis and can be used by researchers and hospitals interested in assessing patient safety culture. Further research is needed to study the criterion-related validity of the survey by analysing the relationship between patient safety culture and patient outcomes and studying how to improve patient safety culture.

Project description:BACKGROUND:Medication errors have been the largest component of medical errors threatening patient safety worldwide. Several international health bodies advocate measuring safety culture within healthcare organizations as an effective strategy for sustainable safety improvement. To the best of our knowledge, this is the first study conducted in a Middle Eastern country at the level of community pharmacy, to examine safety culture and to evaluate the extent to which patient safety is a strategic priority. METHODS:A descriptive cross-sectional study was conducted. The Pharmacy Survey on Patient Safety Culture (PSOPSC), developed by the Agency for Healthcare Research and Quality (AHRQ), was used to collect data. PSOPSC is a self-administered questionnaire which was previously tested for validity and reliability. The questionnaire was distributed among pharmacists who work in community pharmacies from the five governorates of Kuwait (Capital, Hawalli, Farwaniya, Jahra, and Ahmadi). The Statistical Package for Social Science (SPSS) software, version 24 was used for analysing data. RESULTS:A total of 255 community pharmacists from the five governorates were approached to participate in the study, of whom 253 returned a completed questionnaire, with the response rate of 99%. Results from the study showed that patient safety is a strategic priority in many aspects of patient safety standards at the level of community pharmacies. This was reflected by the high positive response rate (PRR) measures demonstrated in the domains of "Teamwork" (96.8%), "Organizational Learning-Continuous Improvement" (93.2%) and "Patient Counselling" (90.9%). On the other hand, the lowest PRR was given to the "Staffing, Work Pressure, and Pace" domain which scored 49.7%. CONCLUSIONS:Understanding community pharmacists' perspectives of patient safety culture within their organization is critical. It can help identify areas of strength and those that require improvement, which can help support decision about actions to improve patient safety. The current study showed that urgent attention should be given to the areas of weakness, mainly in the dimension of "Staffing, Work Pressure and Pace." The pharmacists pointed the need for adequate breaks between shifts and less distractible work environment to perform their jobs accurately.

Project description:Aim of the study: Poor safety culture, bad teamwork, non-functional inter-departmental working relationships and increased cognitive demands are associated with higher amounts of adverse events in hospitals. To improve patient safety, one of the first steps is to assess safety culture among health care providers in an institution. Considering the sparsity of studies addressing patient safety culture in Europe and Switzerland, the aim of the present study was to assess patient safety culture in the emergency department of a University Hospital in Switzerland. Methods: We employed the Hospital Survey On Patient Safety Culture, developed by the U.S. Agency for Healthcare Research and Quality. 140 questionnaires were distributed to nurses and physicians. Two weeks after the first questionnaire, we performed a sensitization campaign addressed to health care providers, and then repeated the survey. We calculated composite scores for each question category and percentages of positive responses for each dimension. For group comparisons such as possible differences relating to education and duration of employment and to compare results of the first and second survey we used T-tests. The results were compared to other published surveys outside of Switzerland. Results: Particularly positive assessments were found for the categories "nonpunitive response to errors", "teamwork within units", "supervisor/manager expectations and actions promoting patient safety" and, compared to other hospitals, also "staffing". The lowest average percent positive responses were found in the categories "frequencies of reported event", "teamwork across units" and "handoffs and transitions". Nurses and health care personnel with a longer employment history had an overall more negative assessment of patient safety culture, when compared to physicians and personnel with a shorter duration of employment, respectively. Conclusions: The present study has identified strengths and potential weaknesses in the safety culture of a large university hospital emergency department in Switzerland. The results provide opportunities for improvement of patient safety in particular in the reporting of adverse events, in interaction across units and patient transitions. Furthermore, as we employed a standardized self-assessment tool similar to previously published studies, the work contributes to the establishment of a benchmark for hospital safety culture at the national, European and international level.

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Development of a Microsoft Excel tool for applying a factor retention criterion of a dimension coefficient to a survey on patient safety culture.

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Development of a Microsoft Excel tool for applying a factor retention criterion of a dimension coefficient to a survey on patient safety culture.

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