Characteristics of 11 controlled intervention studies on tea and blood pressure included in the meta-analysis.

1ABPM, 24-hour ambulatory blood pressure monitoring; CAD, coronary artery disease; MHC, mildly hypercholesterolemic; SBP, systolic blood pressure; CVD, cardiovascular disease; 2 R, randomized; S, single blind; C, crossover trial; D, double blind; P, parallel trial; 3 Where dose in ml tea or mg flavonoids was not reported, it was calculated according to Astill et al. [49]; 4 CC, placebo matched for caffeine content of the tea intervention.