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Table 16 Cross tabulation of exhaled CO by group

From: Elevated nitric oxide and carbon monoxide concentration in nasal-paranasal sinus air as a diagnostic tool of migraine: a case – control study

Oral CO

Group

Patient

Control

> 1

8

0

≤ 1

12

22

  1. Fisher’s exact test statistic F = 8, P < 0.0011
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BMC Neurology

ISSN: 1471-2377

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