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. 2014 Sep 1;1:14. doi: 10.3389/fnut.2014.00014

Table 2.

Effect of zinc and placebo supplementation on clinical variables.

Variables Percentage of subjects affected in 1 year
Zinc group (n = 24) Placebo group (n = 25) Chi square Fishers exact test, p
Infection 29 88 <0.001
Upper respiratory
 Tract infection 12 24 0.136
Tonsillitis 0 8 0.255
Common cold 16 40 0.067
Cold sores 0 12 0.124
Flu 0 12 0.124
Fever 0 20 0.027

One infection each/year 29% 52%
Two infections each/year 0 24%
Three infections each/year 0  8%
Four infections each/year 0  4%
Received antibiotics  8% 48%

Ref (5).

Each person could appear in more than one sub-category of infection.

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