0
ARTICLE |

Hidden Bias in Research Design FREE

Lawrence D. Grouse, MD, PhD
[+] Author Affiliations

Address editorial communications to the Editor, 535 N Dearborn St, Chicago, IL 60610.


JAMA. 1980;243(13):1365-1365. doi:10.1001/jama.1980.03300390049024
Text Size: A A A
Published online

ABSTRACT

I believe that most physicians have had the experience of seeing patients with what are generally considered serious diseases— diseases associated with substantial mortality or morbidity according to the textbooks—and were surprised at how many of these patients do remarkably well, not appearing to follow the morbid textbook course at all. Seen, perhaps, for some minor, unrelated problem, their serious disease may remain totally quiescent, indefinitely. Such experiences make one doubtful of the accuracy of original diagnoses or, in moments of skepticism, make one wonder whether patients referred to academic centers do worse than unreferred (and unreported) cases for reasons other than the pathophysiology of their disease.

An article published in this issue of The Journal by Ellenberg and Nelson (p 1337) may shed some light on this paradox. When studying children with febrile seizures, these investigators find that clinic-based studies may have reported on a biased spectrum of patients.

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

CME Course for:


You need to register in order to view this quiz.


To understand the clinical management of acute heart failure syndromes.
Accreditation Information The American Medical Association is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians.
The AMA designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 CreditTM per course. Physicians should claim only the credit commensurate with the extent of their participation in the activity.
Physicians who complete the CME course and score at least 80% correct on the quiz are eligible for AMA PRA Category 1 CreditTM.
Note: You must get at least of the answers correct to pass this quiz.
Note: You must get at least of the answers correct to pass this quiz.
You have not filled in all the answers to complete this quiz
The following questions were not answered:
Sorry, you have unsuccessfully completed this CME quiz with a score of
The following questions were not answered correctly:
For CME Course: A Proposed Model for Initial Assessment and Management of Acute Heart Failure Syndromes
Indicate what changes(s) you will implement in your practice, if any, based on this CME course.
To view and print your certificate and access a summary of your CME courses go to My CME.
NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s “Cited By” API will populate this tab (http://www.crossref.org/citedby.html).
Submit a Response

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.