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Table 2 Comparison between all registered patients and the included study patients

From: Management of chest pain: a prospective study from Norwegian out-of-hours primary care

  Registered patients, not included (N = 732) Included study patients (n = 100) P-value
Age, years (mean) 55 50 0.016
Age categories, distribution    0.086
18-35 years 17% 23%
36-50 years 26% 33%
51-65 years 24% 23%
66-80 years 21% 15%
>80 years 12% 6%
Sex (female) 46% 42% 0.494
Level of response, distribution    0.451
Red 19% 24%  
Yellow 68% 66%  
Green 13% 10%  
  1. Level of response was set using the Norwegian Index of Medical Emergencies.