Smokers | Non-smokers | |||||
---|---|---|---|---|---|---|
Total | Completed | Dropped out | Total | Completed | Dropped out | |
(n) | n (%) | n (%) | (n) | n (%) | n (%) | |
Treatment number | ||||||
1b | 32 | 20 (62) | 12 (38) | 33 | 27 (82) | 6 (18) |
2 | 20 | 16 (80) | 4 (20) | 27 | 24 (89) | 3 (11) |
3 | 16 | 13 (81) | 3 (19) | 24 | 22 (92) | 2 (8) |
4 | 13 | 11 (85) | 2 (15) | 22 | 21 (95) | 1 (5) |
Treatment type | ||||||
Green tea | 18 | 13 (72) | 5 (28) | 27 | 24 (89) | 3 (11) |
Black teaa | 22 | 14 (63) | 8 (37) | 24 | 23 (96) | 1 (4) |
Caffeinated water | 20 | 17 (85) | 3 (15) | 28 | 24 (86) | 4 (14) |
Placebo | 21 | 16 (77) | 5 (23) | 27 | 21 (85) | 6 (15) |