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Table 2 Participant characteristics by treatment completion* in the crossover tea study

From: A six-month crossover chemoprevention clinical trial of tea in smokers and non-smokers: methodological issues in a feasibility study

Characteristic

Completed (N = 32)

Dropped out (N = 33)

 

(%)

(%)

Age, mean (SD)

33 (12)

33 (12)

Male

44

42

Race/Ethnicity

  

 White

44

46

 African-American

9

36

 Hispanic

6

6

 Asian

38

6

 Other

3

6

Smoking statusa

  

 Current

34

64

 Former

6

-

 Never

60

36

Regular alcohol intake

25

21

Regular tea intake

41

33

Regular coffee intake

52

41

Regular carbonated beverages intake

32

49

Fruit/vegetable servings/day, mean (SD)

2.4 (1.3)

2.7 (1.7)

BMI, mean (SD)

24.1 (3.6)

24.2 (5.8)

  1. a P value <0.05 for comparison between “completed” and “dropped out”.
  2. b 0.05 ≤ P value < 0.10 for comparison between “completed” and “dropped out”.
  3. c 0.10 ≤ P value < 0.15 for comparison between “completed” and “dropped out”.
  4. * Treatment completion is defined as completion of all four crossover treatments.
  5. 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.