Table 6.

Students' Estimated Caffeine Content in Different Beverages

	Perceived caffeine content (mg)
Beverage (actual caffeine content)	0–50	51–100	101–150	151–200	201–250	>250
8 oz Green tea (35 mg), %	27.5	32.3	26.3	9	0.6	0
12 oz Mountain Dew (48 mg), %	9	8.4	19.2	24.0	16.8	18
16 oz Latte (150 mg), %	10.8	4.8	10.8	22.8	25.1	21.6
8.4 oz Red Bull (80 mg), %	9	2.4	8.4	10.2	29.3	35.9
2 oz 5-hour Energy Shot (207 mg), %	11.4	3	13.2	16.2	19.8	32.3

The percentage of students who accurately identified the amount of caffeine in beverages is indicated in bold.