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Comment
. 2014 May 23;32(25):2942.
doi: 10.1016/j.vaccine.2013.08.048. Epub 2013 Sep 7.

Is it necessary to adjust for calendar time in a test negative design?: Responding to: Jackson ML, Nelson JC. The test negative design for estimating influenza vaccine effectiveness. Vaccine 2013;31(April (17)):2165-8

Peter Jacoby  1 , Heath Kelly  2
Affiliations
Comment

Is it necessary to adjust for calendar time in a test negative design?: Responding to: Jackson ML, Nelson JC. The test negative design for estimating influenza vaccine effectiveness. Vaccine 2013;31(April (17)):2165-8

Peter Jacoby et al. Vaccine. .
No abstract available

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