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Volume 18, Number 2—February 2012


Declining Guillain-Barré Syndrome after Campylobacteriosis Control, New Zealand, 1988–2010

Michael G. BakerComments to Author , Amanda Kvalsvig, Jane Zhang, Rob Lake, Ann Sears, and Nick Wilson
Author affiliations: University of Otago, Wellington, New Zealand (M.G. Baker, A. Kvalsvig, J. Zhang, A. Sears, N. Wilson); Institute of Environmental Science and Research, Christchurch, New Zealand (R. Lake)

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Table 5

Comparsion of ages of patients with campylobacteriosis and GBS, New Zealand, July 1995–December 2008*

Calculation A. Patients with campylobacteriosis
B. Patients hospitalized for campylobacteriosis
C. Patients hospitalized for GBS
D. Patients hospitalized for GBS and campylobacteriosis‡
Age, y Age, y p value for age compared with A§ Age, y p value for age compared with B§ Age, y p value for age compared with C§
Mean 33.7 43.7 <0.0001 48.8 <0.0001 50.3 0.7063
Median 31 41 <0.0001 52.5 <0.0001 54 0.7280

*GBS, Guillain-Barré syndrome.
‡Includes subsequent and concurrent hospitalizations (campylobacteriosis and GBS diagnoses at time of hospital discharge).
§Means compared with Student t-test medians compared with median 2-sample test.

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