TABLE 1.

Factors associated with bacteriological confirmation of TBM by forward logistic regression

Factor	Odds ratio	95% confidence interval	P
Duration of symptoms (days)	1.05	1.00-1.10	0.050
Volume of CSF (ml)	1.36	1.06-1.75	0.017
CSF neutrophils (% of white cell count)	1.03	1.01-1.05	0.008
CSF lactate (mmol/liter)	1.42	1.16-1.73	0.001
CSF/blood glucose ratio	0.03	0.02-0.62	0.023