Table 1.
Baseline characteristics for men and women by treatment group
| |
MEN |
WOMEN |
||||
|---|---|---|---|---|---|---|
|
Caffeinated |
Decaffeinated |
No Coffee |
Caffeinated |
Decaffeinated |
No Coffee |
|
| (N = 4) | (N = 4) | (N = 6 ) | (N = 10) | (N = 9) | (N = 9 ) | |
| Age (years) |
37.2 (3.5) |
35.0 (6.4) |
47.3 (18.4) |
40.0 (8.8) |
43.2 (16.6) |
38.4 (18.0) |
| Body mass index (kg/m2) |
30.8 (1.9) |
29.5 (2.7) |
30.4 (1.3) |
28.4 (1.9) |
29.5 (2.2) |
29.2 (2.5) |
| Waist circumference (cm) |
97.7 (7.3) |
102.9 (8.3) |
102.0 (6.8) |
85.9 (10.6) |
90.9 (7.8) |
88.3 (7.4) |
| Postmenopausal (n (%)) |
n/a |
n/a |
n/a |
2 (20) |
5 (56) |
3 (33) |
| SHBG (nmol/L) |
21.4 (13.7, 33.5) |
19.5 (11.7, 32.5) |
29.3 (18.2, 47.3) |
52.6 (35.2, 78.6) |
42.9 (28.6, 64.2) |
38.1 (25.4, 57.0) |
| Testosterone (ng/dL) |
387.9 (303.6, 495.7) |
342.3 (259.0, 452.2) |
475.5 (356.2, 634.6) |
28.2 (19.2, 41.5) |
27.3 (18.1, 41.1) |
34.9 (23.2, 52.4) |
| Free testosterone (ng/dL) |
8.0 (6.2, 10.3) |
7.1 (5.3, 9.5) |
8.0 (5.9, 10.7) |
0.3 (0.2, 0.5) |
0.3 (0.2, 0.5) |
0.4 (0.2, 0.8) |
| Estradiol (pg/mL) |
24.0 (17.0, 33.8) |
21.7 (14.7, 32.1) |
26.2 (17.5, 39.3) |
47.4 (26.2, 85.8) |
34.8 (18.6, 65.2) |
47.7 (25.5, 89.4) |
| Free estradiol (pg/mL) |
0.5 (0.3, 0.7) |
0.4 (0.3, 0.7) |
0.5 (0.3, 0.7) |
0.8 (0.4, 1.4) |
0.5 (0.3, 1.0) |
0.8 (0.4, 1.5) |
| Testosterone : Estradiol |
16.2 (11.4, 23.0) |
15.8 (10.6, 23.5) |
18.1 (12.0, 27.4) |
0.6 (0.3, 1.2) |
0.8 (0.4, 1.6) |
0.7 (0.4, 1.5) |
| DHEAs (ng/mL) | 184.1 (113.7, 298.1) | 160.0 (92.4, 277.2) | 161.7 (96.8, 270.1) | 115.2 (82.7, 160.5) | 98.1 (69.0, 139.3) | 117.4 (82.7, 166.7) |
n/a, not applicable; SHBG, sex hormone-binding globulin; DHEAs, dehydroepiandrosterone sulfate.
Data are arithmetic means (standard deviation) for continuous variables and percentages for categorical variables. Age-adjusted geometric means (95% confidence in intervals) are presented for hormone concentrations which did not follow a normal distribution.