DVB-S2 and DVB-T RF Transmission in 1-mm GI-POF System

An optical system for the transmission of digital video broadcasting (DVB) signals is proposed and experimentally demonstrated. The transmission media comprises 1-mm diameter graded-index plastic optical fiber (GI-POF) with a relatively high bandwidth. The system is fully engineered using low-cost off-the-self components including a vertical-cavity surface-emitting laser, a silicon avalanche photodiode, POF connectors, and all integrated radio frequency (RF) circuitry. The RF distribution of standard DVB-satellite second generation signals in 950 2150 MHz and DVB-terrestrial signals in 470 790 MHz over 25-m GI-POF is successfully demonstrated.This work was supported by the Ministry of Economy and Competitiveness under Project IPT-430000-2010-072 IT-HOGAR and under Project TEC2012-38558-C02-01 MODAL.Beltrán Ramírez, M.; Cabezón, X.; Campo, MA.; Trueba, R.; Lekue, A.; Pac, JM.; Cortés, FJ.... (2014). DVB-S2 and DVB-T RF Transmission in 1-mm GI-POF System. IEEE Photonics Technology Letters. 26(16):1665-1668. doi:10.1109/LPT.2014.2330458S16651668261

De-imFAR phase II project: a study protocol for a cluster randomised implementation trial to evaluate the effectiveness of de-implementation strategies to reduce low-value statin prescribing in the primary prevention of cardiovascular disease

Introduction This study aims to reduce potentially inappropriate prescribing (PIP) of statins and foster healthy lifestyle promotion in cardiovascular disease (CVD) primary prevention in low-risk patients. To this end, we will compare the effectiveness and feasibility of several de-implementation strategies developed following the structured design process of the Behaviour Change Wheel targeting key determinants of the clinical decision-making process in CVD prevention.Methods and analysis A cluster randomised implementation trial, with an additional control group, will be launched, involving family physicians (FPs) from 13 Integrated Healthcare Organisations (IHOs) of Osakidetza-Basque Health Service with non-zero incidence rates of PIP of statins in 2021. All FPs will be exposed to a non-reflective decision assistance strategy based on reminders and decision support tools. Additionally, FPs from two of the IHOs will be randomly assigned to one of two increasingly intensive de-implementation strategies: adding a decision information strategy based on knowledge dissemination and a reflective decision structure strategy through audit/feedback. The target population comprises women aged 45–74 years and men aged 40–74 years with moderately elevated cholesterol levels but no diagnosed CVD and low cardiovascular risk (REGICOR<7.5%), who attend at least one appointment with any of the participating FPs (May 2022–May 2023), and will be followed until May 2024. We use the Reach, Effectiveness, Adoption, Implementation and Maintenance (RE-AIM) framework to evaluate outcomes. The main outcome will be the change in the incidence rate of PIP of statins and healthy lifestyle counselling in the study population 12 and 24 months after FPs’ exposure to the strategies. Moreover, FPs’ perception of their feasibility and acceptability, and patient experience regarding the quality of care received will be evaluated.Ethics and dissemination The study was approved by the Basque Country Clinical Research Ethics Committee and was registered in ClinicalTrials.gov (NCT04022850). Results will be disseminated in scientific peer-reviewed journals.Trial registration number NCT04022850