Validación del test FLI (Fatty Liver Index) para el diagnóstico de esteatosis hepática en pacientes con obesidad y/o diabetes mellitus para su utilización en Atención Primaria. Estudio FLIAP / Validation of the FLI (Fatty Liver Index) test to diagnose hepatic steatosis in patients with obesity and/or diabetes mellitus for use in primary care. FLIAP study

Objetivo: validación de la prueba diagnóstica Fatty Liver Index (FLI) mediante un diseño transversal. Métodos: se incluyeron pacientes con diagnóstico previo de obesidad y/o diabetes en los que estaría indicado hacer una ecografía para descartar esteatosis. Se les realizó el FLI y la prueba Gold Estándar (ecografía). Tamaño muestral: se incluyeron 135 individuos. Se calculó curva ROC, el área bajo la curva y el punto de corte del FLI para la clasificación como esteatosis. Se estimó sensibilidad, especificidad, los valores predictivos positivos y negativos del FLI. Se utilizó el programa SPSS para el análisis. A todos los pacientes se les entregó una hoja informativa del estudio y se pidió consentimiento informado. Resultados: prevalencia de esteatosis del 60,7%, predominando esteatosis leve y moderada. Hubo relación significativa entre esteatosis y triglicéridos, no así para índice de masa corporal (IMC), gamma-glutamil transferasa (GGT) y perímetro abdominal. La curva ROC del FLI se mostró muy cercana a la línea media, y el área bajo la curva fue 0,666 (0,571-0,759; intervalo de confianza [IC] del 95%), que indica una capacidad predictiva del FLI baja. Considerando un punto de corte de 76 para el FLI, la sensibilidad fue del 75,6%, la especificidad del 50,94%, el valor predictivo positivo (VPP) del 70,45% y el valor predictivo negativo (VPN) del 57,45%. Los coeficientes de probabilidad positivo y negativo fueron 1,53 y 0,49, respectivamente, que indican que el FLI no puede considerarse una buena prueba para el diagnóstico de esteatosis. Conclusiones: el test FLI no predice de forma adecuada qué pacientes con diabetes y/o obesidad tendrían esteatosis asociada. Por ello, no se puede recomendar de forma generalizada el uso del FLI para el diagnóstico de esteatosis ni tampoco para sustituir la ecografía. (AU)

Aim: Validation of the FLI (Fatty Liver Index) diagnostic test by means of a cross-sectional design. Methods: Patients with a prior diagnosis of obesity and/or diabetes in whom an ultrasound would be indicated to rule out steatosis were included. The FLI and the Gold Standard test (ultrasound) were performed. Sample size: 135 individuals were included. ROC curve, area under the curve and the FLI threshold for classification as steatosis were all calculated. Sensitivity, specificity and the positive and negative predictive values for FLI were estimated. The SPSS programme was used for the analysis. All patients were given a study information sheet and informed consent was requested. Results: Prevalence of steatosis of 60.7%, with mild and moderate steatosis predominating. There was a statistically significant relationship between steatosis and triglycerides, but not for BMI (body mass index), GGT (gamma-glutamyl transferase) and abdominal perimeter. The FLI ROC curve was very close to the midline, and the area under the curve was 0.666. This reveals a low predictive capacity for FLI. Considering a threshold of 76 for the FLI, the sensitivity, specificity, positive and negative predictive values (PPV and NPV) were 75.6%, 50.94%, 70.45% and 57.45%, respectively. The Positive and Negative Likelihood Ratios were 1.53 and 0.49, respectively. This reveals that FLI cannot be deemed a good test to diagnose steatosis. Conclusions: The Fatty Liver Index test does not adequately predict patients with diabetes and/or obesity who would have associated steatosis. Therefore, the use of FLI to diagnose steatosis or to replace ultrasound cannot be recommended in general. (AU)

Medidas efectivas para lo ineficaz / Effective measures for inefficient

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Professional quality of life and organizational changes: a five-year observational study in Primary Care.

BACKGROUND: The satisfaction and the quality of life perceived by professionals have implications for the performance of health organizations. We have assessed the variations in professional quality of life (PQL) and their explanatory factors during a services management decentralization process. METHODS: It was designed as a longitudinal analytical observational study in a Health Area in Madrid, Spain. Three surveys were sent out during an ongoing management decentralization process between 2001 and 2005. The professionals surveyed were divided into three groups: Group I (97.3% physicians), group II (92.5% nurses) and group III (auxiliary personnel). Analysis of the tendency and elaboration of an explanatory multivariate model was made. The PQL -35 questionnaire, based on Karasek's demand-control theory, was used to measure PQL. This questionnaire recognizes three PQL dimensions: management support (MS), workload (WL) and intrinsic motivation (IM). RESULTS: 1444 responses were analyzed. PQL increased 0.16 (CI 95% 0.04-0.28) points in each survey. Group II presents over time a higher PQL score than group I of 0.38 (IC 95% 0.18-0.59) points. There is no difference between groups I and III.For each point that MS increases, PQL increases between 0.44 and 0.59 points. PQL decreases an average of between 0.35 and 0.49 point, for each point that WL increases. Age appears to have a marginal association with PQL (CI 95% 0.00-0.02), as it occurs with being single or not having a stable relationship (CI 95% 0.01-0.41). Performing management tasks currently or in the past is related to poorer PQL perception (CI 95% -0.45 - -0.06), and the same occurs with working other than morning shifts (CI 95% -0.03 - -0.40 points).PQL is not related to sex, location of the centre (rural/urban), time spent working in the organization or contractual situation. CONCLUSION: With the improvement in work control and avoiding increases in workloads, PQL perception can be maintained despite deep organizational changes at the macro-management level. Different professional groups experience different perceptions depending on how the changes impact their position in the organization.