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	1.	Observational studies. [electronic resource] by Peipert, J F Phipps, M G Producer: 19980908 In: Clinical obstetrics and gynecology vol. 41 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	2.	Reporting observational studies. [electronic resource] by Bracken, M B Producer: 19890830 In: British journal of obstetrics and gynaecology vol. 96 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	3.	[Unreliable observational studies]. [electronic resource] by Arnesen, Erik Producer: 20130628 In: Tidsskrift for den Norske laegeforening : tidsskrift for praktisk medicin, ny raekke vol. 133 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	4.	Understanding observational studies. [electronic resource] Producer: 20170403 In: Drug and therapeutics bulletin vol. 54 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	5.	Give observational studies a chance: better observational studies make better economic evaluations. [electronic resource] by Maetzel, A Bombardier, C Producer: 19991217 In: The Journal of rheumatology vol. 26 Availability: No items available. Save to lists Add to cart (remove)
	6.	Humility in observational studies. [electronic resource] by Shelton, James D Producer: 20021028 In: Science (New York, N.Y.) vol. 297 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	7.	Interpretation of observational studies. [electronic resource] by Jepsen, P Johnsen, S P Gillman, M W Sørensen, H T Producer: 20040923 In: Heart (British Cardiac Society) vol. 90 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	8.	Reporting of observational studies. [electronic resource] by Rothwell, Peter M Bhatia, Meena Producer: 20071029 In: BMJ (Clinical research ed.) vol. 335 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	9.	Bias in observational studies. [electronic resource] by Ranstam, Jonas Producer: 20080805 In: Acta radiologica (Stockholm, Sweden : 1987) vol. 49 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	10.	Registration of observational studies. [electronic resource] by Loder, Elizabeth Groves, Trish Macauley, Domhnall Producer: 20100304 In: BMJ (Clinical research ed.) vol. 340 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	11.	Interpretation of observational studies. [electronic resource] by Polychronopoulou, Argy Pandis, Nikolaos Producer: 20150129 In: American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics vol. 146 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	12.	Epidemiologic inquiry: observational studies. [electronic resource] by Zweig, S C Blake, R L Producer: 19890201 In: Family medicine vol. 20 Availability: No items available. Save to lists Add to cart (remove)
	13.	Coherence in observational studies. [electronic resource] by Rosenbaum, P R Producer: 19940927 In: Biometrics vol. 50 Availability: No items available. Save to lists Add to cart (remove)
	14.	Observational studies in radiology. [electronic resource] by Blackmore, C Craig Cummings, Peter Producer: 20041123 In: AJR. American journal of roentgenology vol. 183 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	15.	Bias in observational studies. [electronic resource] by Pandis, Nikolaos Producer: 20140605 In: American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics vol. 145 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	16.	Observational studies of drug effectiveness. [electronic resource] by Suissa, Samy Producer: 20040224 In: Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology vol. 92 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	17.	Beyond randomised versus observational studies. [electronic resource] by Concato, John Horwitz, Ralph I Producer: 20040610 In: Lancet (London, England) vol. 363 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	18.	SMART designs in observational studies. [electronic resource] by Scherrer, Jeffrey F Balasubramanian, Sumitra Freedland, Kenneth E Lustman, Patrick J Producer: 20150212 In: Journal of general internal medicine vol. 29 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	19.	Understanding Confounding in Observational Studies. [electronic resource] by Meuli, Lorenz Dick, Florian Producer: 20181030 In: European journal of vascular and endovascular surgery : the official journal of the European Society for Vascular Surgery vol. 55 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	20.	Causation in Interventional Observational Studies. [electronic resource] by McLean, Thomas R Producer: 20200508 In: Journal of the American College of Surgeons vol. 229 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)

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Your search returned 3175 results.