TABLE 1.
Sample socio-demographic and clinical features.
| Characteristic | Placebo | Prebiotic diet | Probiotics | Synbiotics |
| Caucasian, n (%) | 21 (75.0) | 27 (96.4) | 25 (80.6) | 29 (90.6) |
| Female sex, n (%) | 26 (92.9) | 27 (96.4) | 28 (90.3) | 27 (84.4) |
| Marital status, n (%) | ||||
| Single | 12 (42.9) | 8 (28.6) | 14 (45.2) | 13 (40.6) |
| Married or de facto | 16 (57.1) | 16 (57.2) | 17 (54.9) | 18 (56.2) |
| Education (%) | ||||
| Secondary | 1 (3.6) | 2 (7.1) | 6 (19.4) | 2 (6.3) |
| College or trade certificate | 2 (7.1) | 4 (14.3) | 3 (9.7) | 5 (15.5) |
| Tertiary | 25 (89.3) | 22 (78.6) | 22 (71.0) | 25 (48.1) |
| Employment (%) | ||||
| Full-time employment | 18 (64.3) | 12 (42.9) | 13 (41.9) | 15 (46.9) |
| Part-time employment | 4 (14.3) | 6 (21.4) | 8 (25.8) | 8 (25.0) |
| Student | 6 (21.4) | 4 (14.3) | 6 (19.4) | 3 (9.4) |
| Income (%) | ||||
| $0–$39,999 | 4 (14.3) | 4 (14.3) | 5 (16.1) | 4 (12.5) |
| $40,000–$79,999 | 5 (17.8) | 5 (17.8) | 6 (19.4) | 7 (21.9) |
| $80,000–$99,999 | 7 (25.0) | 6 (21.4) | 6 (19.4) | 5 (15.6) |
| $100,000+ | 12 (42.9) | 13 (46.4) | 14 (45.2) | 16 (50.0) |
| Age, median (IQR) | 32.6 (13.9) | 40.1 (16.8) | 30.5 (13.7) | 38.3 (8.7) |
| BMI, median (IQR) | 25.5 (6.6) | 26.1 (4.6) | 23.4 (5.2) | 24.9 (4.8) |