Please assess the completion status of the following clinical trial:

Trial Title: the Effect of Endometrial Compaction Caused by Progesterone Effect on Pregnancy Outcomes

Study Design Characteristics:
- Allocation: None
- Intervention Model: None
- Observational Model: COHORT
- Primary Purpose: None
- Time Perspective: PROSPECTIVE
- Masking: None
- Phase: None
- Number of Arms: None

Eligibility Criteria:
Inclusion Criteria:~1. Woman aged 18-40 years~2. Presence of high quality (\>2BB) blastocyst~3. Hormonal(estrogen and progesterone) frozen- thawed embryo transfer cycles~4. presence of high quality blastocyst cryopreserved by vitrification method.~5. A single embryo transfer~Exclusion Criteria:~1. Presence of uterine pathology~2. Participants whose optimal endometrial image cannot be obtained due to uterine position~3. Participants whose treatments were canceled for any reason before embryo transfer~4. Participants which had embryo transfer on the day 2 or 3 (at the cleavage stage)~5. Participants who had 2 embryo transfer~6. Presence of low quality (\<2BB) blastocyst~7. \> 15% loss of viability in the embryo during embryo thawing

- Gender: FEMALE
- Minimum Age: 18 Years
- Maximum Age: 40 Years
- Healthy Volunteers: t

Study Arms:
- with endometrial compaction (Type: None): Participants who have endometrial compaction caused by progesterone effects on undergoing frozen embryo transfer with artificial hormone replacement
- without endometrial compaction (Type: None): Participants who have not endometrial compaction caused by progesterone effects on undergoing frozen embryo transfer with artificial hormone replacement

Based on this trial design, predict the completion outcome and termination type (if applicable).