Effects of L-Cystine and L-Theanine Supplementation on the Common Cold: A Randomized, Double-Blind, and Placebo-Controlled Trial

Table 4

Compliance rate of each tablet during the 5-week trial period.

	Cystine/Theanine group (𝑛=88)	Placebo group (𝑛=85)	𝑃-value^a
Level of compliance (%; mean ± SE)	88.5±1.7	91.4±1.1	—
– Number of volunteers (%)
90∼100%	56 (63.6)	58 (68.2)
70∼90%	23 (26.1)	22 (25.9)	.357
<70%	9 (10.2)	5 (5.9)

aCochran-Mantel-Haenszel ANOVA test was used for comparisons between groups.