Table 6.

Sub-aim 2: participants with DTCGT may increase the caffeine intake, based on the knowledge about their caffeine metabolism (the p = 0.047. This result is significant at p < 0.05); however, the sample size is quite limited.

	Intervention	Control	Marginal Row Totals
Increase caffeine	4 (1.81) [2.66]	4 (6.19) [0.78]	8
Decrease caffeine	10 (12.19) [0.39]	44 (41.81) [0.12]	54
Marginal column totals	14	48	62 (grand total)

The table information is provided as follows: observed cell totals (expected cell totals) [chi-square statistic for each cell].