American Journal of Epidemiology Advance Access originally published online on March 21, 2008
American Journal of Epidemiology 2008 167(9):1141-1142; doi:10.1093/aje/kwn050
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American Journal of Epidemiology © The Author 2008. Published by the Johns Hopkins Bloomberg School of Public Health. All rights reserved. For permissions, please e-mail: journals.permissions@oxfordjournals.org.
LETTERS TO THE EDITOR |
THE AUTHORS REPLY
1 School of Mathematics, Statistics, and Computer Science, Victoria University, Wellington 6140, New Zealand
2 Public Health Intelligence, Ministry of Health, Wellington 6011, New Zealand
3 Long Term Conditions Programme, Ministry of Health, Wellington 6011, New Zealand
4 Current affiliation: Statistical & Data Sciences Practice, Exponent, San Diego, CA 92127
(e-mail: richard.arnold@mcs.vuw.ac.nz)
| The first 10% of the full text of this article appears below. |
We thank Lennon et al. for their interest (1) in our study (2). They question the reliability of our estimate of vaccine effectiveness on the basis of three observations: 1) Vaccine uptake may vary across ethnicity and household crowding or other factors; 2) disease confirmation rates may have differed across the time period studied; and 3) the estimated disease rates