Opportunities and challenges in using studies without a control group in comparative effectiveness reviews - Paulus, Jessica K.; Dahabreh, Issa J.; Balk, Ethan M.; Avendano, Esther E.; Lau, Joseph; Ip, Stanley (Research synthesis methods, 2014)
Keywords: Analysis. Health state; before-after studies; Biological and medical sciences; Clinical Trials as Topic; Comparative Analysis; Comparative Effectiveness Research - methods; confounding; Control Groups; Data Mining - methods; Epidemiology; Evidence-Based Medicine; Experimental Groups; General aspects; historical controls; Intervention; Medical sciences; observational studies; Outcome Assessment (Health Care) - methods; Outcomes of Treatment; Public health. Hygiene; Public health. Hygiene-occupational medicine; Research Design; Review Literature as Topic; single arm studies; single group studies; Extrapolation; confounding; Follow up study; Evidence-based practice; Causality; History; observational studies; single group studies; before-after studies; historical controls; single arm studies