Supplemental Nocturnal Oxygen in Obstructive Lung Disease
To the Editor: Elimination of order effects and blinding of patients to a change in intervention are important design elements of self-controlled clinical studies. 1 Unfortunately, a recent study of the effect of breathing supplemental nocturnal oxygen on arterial carbon dioxide tensions in patients...
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Published in | The New England journal of medicine Vol. 311; no. 2; p. 128 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
United States
Massachusetts Medical Society
12.07.1984
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Subjects | |
Online Access | Get full text |
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Summary: | To the Editor:
Elimination of order effects and blinding of patients to a change in intervention are important design elements of self-controlled clinical studies.
1
Unfortunately, a recent study of the effect of breathing supplemental nocturnal oxygen on arterial carbon dioxide tensions in patients with severe chronic obstructive lung disease did not include these elements.
2
In that study each of 15 patients was evaluated in a sleep laboratory on two successive nights. During the first night each patient was studied while breathing supplemental oxygen by nasal cannula. During the second night each patient was studied while breathing room air. The effects . . .
No extract is available for articles shorter than 400 words. |
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Bibliography: | SourceType-Other Sources-1 ObjectType-Article-2 content type line 63 ObjectType-Feature-1 ObjectType-Correspondence-3 |
ISSN: | 0028-4793 1533-4406 |
DOI: | 10.1056/NEJM198407123110219 |