Treatment of the Common Cold with Unrefined Echinacea

Figure 3. Dotted lines represent the echinacea group; solid lines represent the placebo group. Error bars represent 95% CIs. Although 95% CIs indicate the uncertainty of the severity of symptoms, they should not be used to compare symptom severity on any particular day.
Figure 3. Dotted lines represent the echinacea group; solid lines represent the placebo group. Error bars represent 95% CIs. Although 95% CIs indicate the uncertainty of the severity of symptoms, they should not be used to compare symptom severity on any particular day. Mean severity of global and general symptoms.

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  1. Ann Intern Med December 17, 2002 vol. 137 no. 12 939-946
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