Extract
We thank C.R. Osadnik and co-workers for raising these comments and would like to explain the rationale behind our chosen strategy of analyses.
Abstract
Adjusting for prior history of outcome variable may lead to overadjustment bias in observational studies http://ow.ly/627230gCBFd
Footnotes
Support statement: Funded by the Respiratory Effectiveness Group. Funding information for this article has been deposited with the Crossref Funder Registry.
Conflict of interest: Disclosures can be found alongside this article at erj.ersjournals.com
- Received October 10, 2017.
- Accepted October 10, 2017.
- Copyright ©ERS 2017
INDIVIDUALS
Log in using your username and password
LIBRARY USERS
Log in through your institution
If your library has a subscription, you may already be logged in via your IP address. Otherwise you may be able to log in via one of the following routes.
You may be able to gain access using your login credentials for your institution. Contact your library if you do not have a username and password.
If your organization uses OpenAthens, you can log in using your OpenAthens username and password. To check if your institution is supported, please see this list. Contact your library for more details.
If you think you should have access, please contact your librarian or email journals@ersnet.org
Purchase access
You may purchase access to this article. This will require you to create an account if you don't already have one.
CONTACT US
If you have any questions about the ERS publications website, please contact journals@ersnet.org
Vol 50 Issue 6
Table of Contents
The effect of smoking on exacerbation risk in eosinophilic patients with COPD
