Table 4: Distributions of the solutions tested by IRR (Incidence Rate Ratio).

Solutions	IRR	Std. Err.	P	95% conf. interval
Coca-Cola®	2.00	0.35	0.00	1.43	2.80
Coffee	9.83	1.45	0.00	7.36	13.12
Tea	9.44	1.39	0.00	7.06	12.60
Wine	7.3	1.11	0.00	5.54	9.97