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Observed to expected or logistic regression to identify hospitals with high or low 30-day mortality?

. Data curation: Doris Tove Kristoffersen. Conceptualization: Doris Tove Kristoffersen, Jon Helgeland, Jocelyne Clench-Aas, Petter Formal analysis: Doris Tove Kristoffersen, Jon Helgeland, Petter Laake ... , Marit B. Veierød. Investigation: Jocelyne Clench-Aas. Methodology: Doris Tove Kristoffersen, Jon Helgeland, Petter Laake, Marit B. Veierød. Project administration: Jocelyne Clench-Aas. Software: Doris

Variation between Hospitals with Regard to Diagnostic Practice, Coding Accuracy, and Case-Mix. A Retrospective Validation Study of Administrative Data versus Medical Records for Estimating 30-Day Mortality after Hip Fracture

Background The purpose of this study was to assess the validity of patient administrative data (PAS) for calculating 30-day mortality after hip fracture as a quality indicator, by a retrospective study of medical records. Methods We used PAS data from all Norwegian hospitals (2005–2009), merged with vital status from the National Registry, to calculate 30-day case-mix adjusted...

30-Day Survival Probabilities as a Quality Indicator for Norwegian Hospitals: Data Management and Analysis

Background The Norwegian Knowledge Centre for the Health Services (NOKC) reports 30-day survival as a quality indicator for Norwegian hospitals. The indicators have been published annually since 2011 on the website of the Norwegian Directorate of Health (, as part of the Norwegian Quality Indicator System authorized by the Ministry of Health. Openness regarding...

The Effects of Mandatory Prescribing of Thiazides for Newly Treated, Uncomplicated Hypertension: Interrupted Time-Series Analysis

Background The purpose of our study was to evaluate the effects of a new reimbursement rule for antihypertensive medication that made thiazides mandatory first-line drugs for newly treated, uncomplicated hypertension. The objective of the new regulation was to reduce drug expenditures. Methods and Findings We conducted an interrupted time-series analysis on prescribing data...

How Should the Impact of Different Presentations of Treatment Effects on Patient Choice Be Evaluated? A Pilot Randomized Trial

Background Different presentations of treatment effects can affect decisions. However, previous studies have not evaluated which presentations best help people make decisions that are consistent with their own values. We undertook a pilot study to compare different methods for doing this. Methods and Findings We conducted an Internet-based randomized trial comparing summary...

The Effect of Alternative Summary Statistics for Communicating Risk Reduction on Decisions about Taking Statins: A Randomized Trial

Carling and colleagues carry out a trial evaluating different methods of communicating information to people regarding the risks and benefits of taking statins. They suggest that natural frequencies are likely to be the most appropriate summary statistic for presenting the effects of treatment.

The Effect of How Outcomes Are Framed on Decisions about Whether to Take Antihypertensive Medication: A Randomized Trial

Background We conducted an Internet-based randomized trial comparing three valence framing presentations of the benefits of antihypertensive medication in preventing cardiovascular disease (CVD) for people with newly diagnosed hypertension to determine which framing presentation resulted in choices most consistent with participants' values. Methods and Findings In this second in...

The Effect of Alternative Graphical Displays Used to Present the Benefits of Antibiotics for Sore Throat on Decisions about Whether to Seek Treatment: A Randomized Trial

In a randomized trial, Cheryl Carling and colleagues evaluate how people respond to different statistical presentations regarding the consequences of taking antibiotic treatment for sore throat.