In this retrospective matched case-control single center study, patients with PAL-treatment were compared to a matched control group for 1 week from the onset of ALI.
When compared to a matched general population, mortality remains increased.
In this retrospective study, all patients who were operated on at our institution for a PTA between 1998 and 2005 (the PTA group) were included and compared to a matched group of patients who were operated on for primary arthritis during the same period (the PA group).
Borer et al. conducted a matched, retrospective, cohort study and found a 50% attributable mortality rate for KPC K. pneumoniae blood stream infections when compared to hospitalized patients that were infected but without bacteremia [ 3].
A matched retrospective case control study was conducted in a cohort of patients with confirmed AMES to identify risk factors for CM.
The response to palifermin was compared to a similarly sized, retrospective population matched for age, gender, diagnosis, disease state, and HSCT type.
The matching weights are compared to a pair of criteria, known as the matching parameters, in order to classify records as matches, possible matches and non-matches.
A retrospective sample of 24 class II patients treated consecutively with the FRD followed by comprehensive orthodontic treatment was compared to a sample of untreated control subjects from the Bolton Brush Study who was matched in age, sex, and craniofacial morphology.
In a retrospective matched case control study, a cohort of 26 patients receiving Tachosil® after laparoscopic pelvic lymphadenectomy was compared to a historical cohort of 29 women without Tachosil® after laparoscopic pelvic lymphadenectomy.
A retrospective analysis of 170,086 patients using claims data from 2004 to 2008 found significantly higher mean total 6-month costs in chronic pain subjects with an exposure to a potential DDI compared to matched subjects without an exposure ($8165 vs. $7498, respectively; p < 0.01) [ 50].
