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18 in total

1. Registration of observational studies does not enhance validity.

Authors: D A Savitz
Journal: Clin Pharmacol Ther Date: 2011-11 Impact factor: 6.875

2. Preregistration of study protocols is unlikely to improve the yield from our science, but other strategies might.

Authors: Timothy L Lash
Journal: Epidemiology Date: 2010-09 Impact factor: 4.822

3. The registration of observational studies--when metaphors go bad.

Authors:
Journal: Epidemiology Date: 2010-09 Impact factor: 4.822

4. Registration of observational studies: is it time?

Authors: Rebecca J Williams; Tony Tse; William R Harlan; Deborah A Zarin
Journal: CMAJ Date: 2010-07-19 Impact factor: 8.262

5. Should protocols for observational research be registered?

Authors:
Journal: Lancet Date: 2010-01-30 Impact factor: 79.321

6. GRACE principles: recognizing high-quality observational studies of comparative effectiveness.

Authors: Nancy A Dreyer; Sebastian Schneeweiss; Barbara J McNeil; Marc L Berger; Alec M Walker; Daniel A Ollendorf; Richard E Gliklich
Journal: Am J Manag Care Date: 2010-06 Impact factor: 2.229

7. Registration of protocols for observational research is unnecessary and would do more harm than good.

Authors: Neil Pearce
Journal: Occup Environ Med Date: 2010-11-29 Impact factor: 4.402

8. The AMCP format for formulary submissions version 3.0.

Authors:
Journal: J Manag Care Pharm Date: 2010-01

9. The value of statistical analysis plans in observational research: defining high-quality research from the start.

Authors: Laine Thomas; Eric D Peterson
Journal: JAMA Date: 2012-08-22 Impact factor: 56.272

10. The PRISMA statement for reporting systematic reviews and meta-analyses of studies that evaluate health care interventions: explanation and elaboration.

Authors: Alessandro Liberati; Douglas G Altman; Jennifer Tetzlaff; Cynthia Mulrow; Peter C Gøtzsche; John P A Ioannidis; Mike Clarke; P J Devereaux; Jos Kleijnen; David Moher
Journal: PLoS Med Date: 2009-07-21 Impact factor: 11.069

2 in total

1. The efficacy of activated protein C for the treatment of sepsis: incorporating observational evidence with a Bayesian approach.

Authors: Zhongheng Zhang
Journal: BMJ Open Date: 2015-01-16 Impact factor: 2.692

2. DEBATE-statistical analysis plans for observational studies.

Authors: Bart Hiemstra; Frederik Keus; Jørn Wetterslev; Christian Gluud; Iwan C C van der Horst
Journal: BMC Med Res Methodol Date: 2019-12-09 Impact factor: 4.615

2 in total