Study Design: We used a retrospective case-control study design and a sample derived from patients admitted for management of their odontogenic infections.
To identify the prevalence, clinical characteristics and routine EEG features of the syndrome of eyelid myoclonia with absences (EMA) using a retrospective case control study design.
We used a retrospective case control design in five consecutive influenza seasons, and estimated influenza vaccine effectiveness (VE) for patients of all ages to be 53% (95% CI 38 64), but 41% 95%% CI 19 57) adjusted for age group and year.
Recently there have been concerns about the use of gatifloxacin, after a retrospective case-control study in 1.4 million individuals over the age of 66 years (mean age 77 years) in Canada was published [25].
This study aimed to estimate the association of ED with prior OAG by using a nationwide, population-based data with a retrospective case-control cohort design in Taiwan.
We performed a retrospective case-control study using reimbursement anonymised data from Achmea Health Insurance, one of the largest health insurance companies in the Netherlands, and anonymised routine care data from the primary care database of the Julius Primary Care Network (JPCN) of the University Medical Centre, Utrecht.
A retrospective case-control design was used that identified the PEW System Score (H. Duncan, J. Hutchison, & C. Parshuram, 2006) as a stronger predictor of cardiopulmonary arrest (CPA) than either the PEW Tool (C. Haines, M. Perrott, & P. Weir, 2006) or the Bedside PEW System Score (C. Parshuram, J. Hutchison, & K. Middaugh, 2009).
To determine how inattention and altered consciousness may differ in fallers and a matched control, a retrospective case-control analysis was performed using data from two quality improvement projects.
