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Demographics and clinical characteristics of the patients and the controls
| Variables (mean ± standard deviation) | Patients | Controls | p value |
|---|---|---|---|
| Gender (female/male) | 10/9 | 15/6 | 0.220a |
| Age, years | 38.74 ± 10.71 | 39.62 ± 6.62 | 0.759b |
| Illness duration, months | 24.29 ± 31.26 | ||
| Tsui | 16.32 ± 4.45 |
Tsui: Tsui scale
aThe p value for gender distribution in the two groups was obtained by chi-square test
bThe p values were obtained by two sample t-tests
