Table 1.
General information (mean ± SD)
| Group | n | M/F | Age (yr) |
| Observation group | 93 | 54/39 | 53.29 ± 9.49 |
| Control group | 40 | 27/13 | 52.17 ± 8.14 |
| t/χ2 | 1.046 | 0.65 | |
| P value | > 0.05 | > 0.05 |
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