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Table 2 Sensitivity calculations for ICHD-3 diagnostic criteria and proposed diagnostic criteria

From: New diagnostic criteria for headache attributed to transient ischemic attacks

Diagnostic criteria

Number of TIA patients

Sensitivity

A. ICHD-3 diagnostic criteria

 New simultaneous headache lasting ≤24 h over all new headaches occurring within 24 h

8/16

50%

 Using all headaches occurring within 24 h as denominator

8/33

24%

B. Proposed diagnostic criteria

 New headaches within 24 h over all headaches within 24 h

16/33

48%

 New and simultaneous previous with altered characteristics over all headaches within 24 h

24/33

72%

 New plus any simultaneous previous over all headaches within 24 h

31/33

94%