Clinical features

Positive if the patient's headache worsens on rotating the head horizontally 2 or 3 times.

Why?

No jolt accentuation makes meningitis less likely

Patient	Target Disorder and Reference Standard	Diagnostic Test	LR+ (95% CI)	Post-test Probability	LR- (95% CI)	Post-test Probability
recent-onset headache and fever b (pre-test probability: 63%)	CSF pleocytosis ( 5 or more white cells per mm 3 of CSF )	jolt accentuation	2.4 (1.4 to 4.2)	80%	0.049 (0.0069 to 0.35)	8%