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Demographic parameters of the study and control groups
| SCH (+) n=44 |
SCH (−) n=198 |
p | |
|---|---|---|---|
| Age (years) | 29.5±6.2 | 29.0±5.5 | .624 |
| Parity (n) | .5±.8 | .6±.8 | .581 |
| Previous miscarriage (n) | .5±.7 | .4±.8 | .657 |
| Gestational age at first vaginal bleeding (weeks) | 9.3±2.8 | 10.2±3.3 | .085 |
SCH: subchorionic hematoma
