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. Author manuscript; available in PMC: 2007 Apr 17.
Published in final edited form as: Otolaryngol Head Neck Surg. 2007 Apr;136(4):589–596. doi: 10.1016/j.otohns.2006.11.039

Table 2.

Attack rate of meningitis based on clinical and histological evidence of meningitis

Routes of inoculation and the size of the S. pneumoniae in colony-forming units (CFU) Cochleostomy only (per 6 rats) (Control) Cochleostomy and cochlear implantation (per 6 rats) Cochleostomy and acute cochlear implantation (per 6 rats)
Intra-peritoneal: 4 x 106 CFU 0 6 * 0 N.S.
Middle ear : 3 x 104 CFU 0 6 * 2 N.S.
Inner ear : 1 x 103 CFU 0 6 * 0 N.S.
*

The effect of a cochlear implant on the risk of meningitis is statistically significant (p=0.001, one-tailed Fisher’s exact test)

N.S. The effect of acute electrode insertion only is not statistically significant p> 0.2, one-tailed Fisher’s exact test)