Table 4.
The prevalence of SDRMs in different age groups
| Age | Total | Subjects with SDRMs | Trend χ2 | p |
|---|---|---|---|---|
| < 30 | 168 | 1 (0.6%) | 4.739 | 0.033 |
| 31–50 | 165 | 5 (3.0%) | ||
| ≥51 | 78 | 4 (5.1%) |
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