Table 1. Characteristics of participants.
| Characteristics | Real (N=25) | Sham (N=25) | F/χ2 | P value |
|---|---|---|---|---|
| Age (years) | 30.96±5.36 | 33.00±7.67 | 1.142 | 0.291 |
| Gender (men/women) | 15/10 | 15/10 | 0.000 | 1.000 |
| Education (years) | 9.33±1.97 | 9.52±1.34 | 0.145 | 0.705 |
| Marital status | 3.734 | 0.155 | ||
| Married | 6 | 7 | ||
| Divorced | 3 | 8 | ||
| Never married | 16 | 10 | ||
| Employment (yes/no) | 11/14 | 15/10 | 1.282 | 0.258 |
| BMI (kg/m2) | 24.02±3.38 | 24.02±3.70 | 0.001 | 0.997 |
| Alcohol (yes/no) | 10/15 | 13/12 | 0.725 | 0.395 |
| Nicotine (yes/no) | 25/0 | 25/0 | 0.000 | 1.000 |
| Onset age (years) | 23.50±6.55 | 24.30±8.72 | 0.129 | 0.722 |
| Withdrawal (months) | 3.92±1.21 | 3.43±0.90 | 2.384 | 0.130 |
| Duration of use (years) | 5.88±3.75 | 6.52±3.96 | 0.331 | 0.568 |
| Daily dose (g) | 0.55±0.31 | 0.55±0.32 | 0.001 | 0.982 |
| Frequency | 2.143 | 0.543 | ||
| Every day | 15 (60.0%) | 13 (52.0%) | ||
| 3–5 times a week | 7 (28.0%) | 7 (28.0%) | ||
| Once a week | 3 (12.0%) | 3 (12.0%) | ||
| 1–3 times a month | 0 (0.00%) | 2 (8.0%) |
BMI, body mass index.