Signs and Evidence

Making clinical sense of scientific data


Exacerbation by physical activity

 Positive likelihood ratio
3.70 ( Smetana GW et al. )
(average) 3.7
Negative likelihood ratio
0.24 ( Smetana GW et al. )
(average) 0.24

Sources used:

1.Smetana GW et al. The Diagnostic Value of Historical Features in Primary Headache SyndromesA Comprehensive Review. Arch Intern Med. 2000;160(18):2729-2737