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. 2009 Jul 29;4(7):e6426. doi: 10.1371/journal.pone.0006426

Table 9. Multivariate analysis of groups of diagnostic factors for the diagnosis of ‘other pathogens’.

Diagnostic Factors Other pathogens
OR 95%CI P %PPV 95%CI %NPV 95%CI
Age<1year 4.25 1.92–9.42 <0.001
Absence of haemorrhagic rash 9.96 2.36–42.05 0.002
Absence of meningeal signs 3.68 1.78–7.54 <0.001
Age<1year+Absence of haemorrhagic rash+Absence of Meningeal signs 20.0 13.3–28.3 97.4 96.3–98.2
Age<1year 4.35 1.82–10.39 <0.001
Absence of haemorrhagic rash 21.51 2.87–161.18 0.003
Negative gram stain 3.46 1.64–7.29 0.001
Absence of meningeal signs 3.37 1.51–7.41 0.003
Age<1year+Absence of haemorrhagic rash+Negative gram stain+Absence of meningeal signs 37.9 20.7–57.7 96.6 95.5–97.5
Age<1year 5.65 2.41–13.26 <0.001
Negative gram stain 2.65 1.28–5.48 0.008
Absence of meningeal signs 3.24 1.48–7.07 0.003
Age<1year+Negative gram stain+Absence of meningeal signs 24.4 12.9–39.5 96.6 95.4–97.5
Age<1year 5.37 2.55–11.30 <0.001
Negative gram stain 3.48 1.79–6.77 <0.001
Absence of haemorrhagic rash 27.39 3.71–202.50 0.001
Age<1year+Negative gram stain+Absence of haemorrhagic rash 22.2 12.7–34.5 96.8 95.6–97.6