Browsing by Subject "rating scale"
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Item Open Access Academic oral presentation skills instructors' perceptions of the final project presentation rating scale used in Modern Languages Department at Middle East Technical University(Bilkent University, 2003) Bozatlı, İpekThis study explored ENG 211 instructors’ perceptions of the final project presentation rating scale used in the Modern Languages Department at Middle East Technical University.In order to collect data, 25 ENG 211 instructors were asked to complete a questionnaire. Three rating questions in the questionnaire asked participants to evaluate how essential the rating scale categories are to them according to three different criteria: for distinguishing among strong and weak students, giving instructors feedback on the effectiveness of their instruction, and giving students feedback on various aspects of their oral presentation skills. Through two open-ended questions, positive and negative attributes of the rating scale, as perceived by the the participants, were investigated. Data collected from the rating questions were analyzed quantitatively by employing descriptive statistics, such as frequencies, means and standard deviations; data obtained from two open-ended questions were analyzed qualitatively The data results revealed that most of the rating scale categories were rated as ‘essential’ by the participants for all three rating questions. However, some categories were most commonly rated lower on the three questions. These categories had objectives that were not taught in ENG 211, were felt to be outside the control of ENG 211 instructors, or which instructors felt should have different overall values, and more clear descriptors. In addition, results obtained from the open-ended questions supported the results obtained from the rating questions.Item Open Access Comparison of original EuroSCORE, EuroSCORE II and STS risk models in a Turkish cardiac surgical cohort(2013) Kunt, A.G.; Kurtcephe, M.; Hidiroglu, M.; Cetin L.; Kucuker, A.; Bakuy V.; Ruchan Akar, A.; Sener, E.OBJECTIVESThe aim of this study was to compare additive and logistic European System for Cardiac Operative Risk Evaluation (EuroSCORE), EuroSCORE II and the Society of Thoracic Surgeons (STS) models in calculating mortality risk in a Turkish cardiac surgical population.METHODSThe current patient population consisted of 428 patients who underwent isolated coronary artery bypass grafting (CABG) between 2004 and 2012, extracted from the TurkoSCORE database. Observed and predicted mortalities were compared for the additive/logistic EuroSCORE, EuroSCORE II and STS risk calculator. The area under the receiver operating characteristics curve (AUC) values were calculated for these models to compare predictive power.RESULTSThe mean patient age was 74.5 ± 3.9 years at the time of surgery, and 35.0% were female. For the entire cohort, actual hospital mortality was 7.9% (n = 34; 95% confidence interval [CI] 5.4-10.5). However, the additive EuroSCORE-predicted mortality was 6.4% (P = 0.23 vs observed; 95% CI 6.2-6.6), logistic EuroSCORE-predicted mortality was 7.9% (P = 0.98 vs observed; 95% CI 7.3-8.6), EuroSCORE II- predicted mortality was 1.7% (P = 0.00 vs observed; 95% CI 1.6-1.8) and STS predicted mortality was 5.8% (P = 0.10 vs observed; 95% CI 5.4-6.2). The mean predictive performance of the analysed models for the entire cohort was fair, with 0.7 (95% CI 0.60-0.79). AUC values for additive EuroSCORE, logistic EuroSCORE, EuroSCORE II and STS risk calculator were 0.70 (95% CI 0.60-0.79), 0.70 (95% CI 0.59-0.80), 0.72 (95% CI 0.62-0.81) and 0.62 (95% CI 0.51-0.73), respectively.CONCLUSIONSEuroSCORE II significantly underestimated mortality risk for Turkish cardiac patients, whereas additive and logistic EuroSCORE and STS risk calculators were well calibrated. © 2013 The Author 2013.