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Frequency of AF ‘sludge’ according to cervical length
| AF ‘sludge’ present | |
|---|---|
| Cervical length <5 mm | 69 (20/29) |
| Cervical length <15 mm | 49 (33/68) |
| Cervical length <25 mm | 35 (49/142) |
| Cervical length >30 mm | 12 (12/99) |
Values are expressed as percentage (number).
