Univariate analysis of risk factors for being a RT-PCR positive, culture-negative case-patient, using culture positive patients as controls.

There were a total of 118 case-patients and 162 controls. For some calculations, denominators differ because of missing data for some patients.OR, odds ratio; CI, confidence interval; CSF, cerebrospinal fluid; MIC, minimum inhibitory concentration of CSF against strain of Kocuria rhizophila among specimens with detectable antibiotic; WBC, white blood cell.