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| Variate | Observation group (n=54) | Control group (n=54) | t/F | P |
|---|---|---|---|---|
| Age | 29.63±5.32 | 30.14±5.37 | 0.496 | 0.621 |
| Pregnancy times | 1.37±0.98 | 1.52±1.02 | 0.779 | 0.438 |
| Symptom | 0.895 | 0.336 | ||
| Decreased menstrual flow | 31 | 25 | ||
| Amenorrhea | 23 | 29 |
