Table 5

Participant characteristics by drop-out time* among those who dropped out of the crossover tea study
Characteristic Early drop-out Late drop-out
(N = 18) (N = 15)
(%) (%)
Age, mean (SD) 34 (12) 32 (12)
Male 39 47
Race/Ethnicity c
 White 33 60
 African-American 45 27
 Other 22 13
Smoking status
 Current 67 60
 Former - -
 Never 33 40
Regular alcohol intake 33 7
Regular tea intake, c 22 47
Regular coffee intake, c 33 50
Regular carbonated beverages intake 50 47
Fruit/vegetable servings/day, mean (SD) 2.8 (1.7) 2.7 (1.7)
BMI, mean (SD) 24.1 (7.1) 24.33 (3.9)

aP value <0.05 for comparison between “early drop-out” and “late drop-out”.

b 0.05 ≤ P value < 0.10 for comparison between “early drop-out” and “late drop-out”.

c 0.10 ≤ P value < 0.15 for comparison between “early drop-out” and “late drop-out”.

* Drop-out time categorized as “early” for those who dropped out between the first and second treatment visits, and “late” for those who dropped out after the second treatment visit.

Regular intake <2 servings per day. Participants reporting ≥2 servings per day consumption of tea, coffee, carbonated beverages, or alcohol were excluded from the trial.

Dash et al.

Dash et al. BMC Complementary and Alternative Medicine 2012 12:96   doi:10.1186/1472-6882-12-96

Open Data