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.
This study used a retrospective case study design.
This is a qualitative study using a retrospective, case study design [ 26].
The evaluation used a retrospective case study approach, employing both qualitative and quantitative methods.
Data were collected about eight individuals who developed severe pressure ulcers, using a retrospective case study design.
Using a retrospective case review methodology, Abel and colleagues [ 10] reported that 33% of deaths in hospital could have occurred at home (including residential care homes).
However there are sound reasons for using a retrospective case study approach in order to examine a successfully integrated EMR system, since this provides a rapid, yet fairly comprehensive means of identifying the various factors that were critical in its adoption, which can sometimes take several years to complete in full.
We investigate delay in referral, defining this as the time from symptom-onset to date of general practitioners referral letter to secondary care, and the effect of that delay, using a retrospective case notes based study of patients presenting at our institution with oropharyngeal squamous carcinoma between 1995 and 2005.
Our objective was to identify surgical predictors of SSI in patients undergoing colorectal surgery using a retrospective case-control design.
Study Design: We used a retrospective case-control study design and a sample derived from patients admitted for management of their odontogenic infections.
