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	21.	Adjusting for baseline: change or percentage change. [electronic resource] by Matthews, J N Campbell, M J Producer: 19921223 In: Statistics in medicine vol. 11 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	22.	A trial of increased access to primary care. [electronic resource] by Corey, G A Producer: 19960919 In: The New England journal of medicine vol. 335 Availability: No items available. Save to lists Add to cart (remove)
	23.	The sicker get healthier and the healthier get sicker; eventually the twain shall meet. [electronic resource] by Christenson, P Producer: 19930902 In: Journal of child and adolescent psychiatric and mental health nursing vol. 6 Availability: No items available. Save to lists Add to cart (remove)
	24.	Problems with null hypothesis significance testing. [electronic resource] by Gliner, J A Morgan, G A Leech, N L Harmon, R J Producer: 20010308 In: Journal of the American Academy of Child and Adolescent Psychiatry vol. 40 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	25.	Hawthorne Effect Should Be Controlled for in Quality Control Studies-Reply. [electronic resource] by van de Graaf, Floyd W Lange, Johan F Producer: 20200702 In: JAMA surgery vol. 154 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	26.	Re: "Interpretation and choice of effect measures in epidemiologic analyses". [electronic resource] by Levin, B Producer: 19910613 In: American journal of epidemiology vol. 133 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	27.	Conditional bias of point estimates following a group sequential test. [electronic resource] by Fan, Xiaoyin Frank DeMets, David L Lan, K K Gordon Producer: 20050106 In: Journal of biopharmaceutical statistics vol. 14 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	28.	Hawthorne Effect Should Be Controlled for in Quality Control Studies. [electronic resource] by Gachabayov, Mahir Dyatlov, Artem Bergamaschi, Roberto Producer: 20200702 In: JAMA surgery vol. 154 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	29.	Characteristics of the healthy worker effect. [electronic resource] by Baillargeon, J Producer: 20010726 In: Occupational medicine (Philadelphia, Pa.) vol. 16 Availability: No items available. Save to lists Add to cart (remove)
	30.	[Theoretical study of alveolar gas under variable conditions]. [electronic resource] by BARGETON, D Producer: 19981101 In: Journal de physiologie vol. 53 Availability: No items available. Save to lists Add to cart (remove)
	31.	Two-condition within-participant statistical mediation analysis: A path-analytic framework. [electronic resource] by Montoya, Amanda K Hayes, Andrew F Producer: 20180614 In: Psychological methods vol. 22 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	32.	Identification of operating mediation and mechanism in the sufficient-component cause framework. [electronic resource] by Suzuki, Etsuji Yamamoto, Eiji Tsuda, Toshihide Producer: 20110929 In: European journal of epidemiology vol. 26 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	33.	The Interaction Continuum. [electronic resource] by VanderWeele, Tyler J Producer: 20200907 In: Epidemiology (Cambridge, Mass.) vol. 30 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	34.	Validation studies using an alloyed gold standard. [electronic resource] by Wacholder, S Armstrong, B Hartge, P Producer: 19930805 In: American journal of epidemiology vol. 137 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	35.	Mediational E-values: Approximate Sensitivity Analysis for Unmeasured Mediator-Outcome Confounding. [electronic resource] by Smith, Louisa H VanderWeele, Tyler J Producer: 20200908 In: Epidemiology (Cambridge, Mass.) vol. 30 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	36.	Can DAGs clarify effect modification? [electronic resource] by Weinberg, Clarice R Producer: 20080208 In: Epidemiology (Cambridge, Mass.) vol. 18 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	37.	More about the Hawthorne effect. [electronic resource] by De Amici, D Klersy, C Ramajoli, F Brustia, L Producer: 20001018 In: Anesthesia and analgesia vol. 91 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	38.	The awareness of being observed changes the patient's psychological well-being in anesthesia. [electronic resource] by De Amici, D Klersy, C Ramajoli, F Brustia, L Producer: 20000316 In: Anesthesia and analgesia vol. 90 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	39.	Confounding and effect modification: their significance in medical research. [electronic resource] by Olayinka, B A Producer: 19970707 In: The Central African journal of medicine vol. 43 Availability: No items available. Save to lists Add to cart (remove)
	40.	Modelling covariate effects in observer agreement studies: the case of nominal scale agreement. [electronic resource] by Guggenmoos-Holzmann, I Producer: 19960222 In: Statistics in medicine vol. 14 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 1327 results.