Mobility restrictions and maternal isolation during COVID-19 in Japan: A nationwide retrospective cross-sectional survey on obstetricians’ observations on women’s experiences

Technical Summary: Mobility Restrictions and Maternal Isolation during COVID-19 in Japan

Problem Statement
The COVID-19 pandemic imposed unprecedented mobility restrictions that disrupted global healthcare delivery, with specific, profound implications for maternal health. In Japan, where maternity care has traditionally relied heavily on family-based support systems rather than robust public institutional frameworks, these restrictions threatened to sever critical informal safety nets. The study addresses the gap in understanding how pandemic-era mobility restrictions specifically affected:

1. Childbirth practices: Specifically the disruption of Sato-gaeri (the cultural practice of returning to one's parental home for delivery and postpartum recovery).
2. Reproductive health behaviors: Including demand for assisted reproductive technology (ART), elective oocyte cryopreservation, inter-facility gamete transfer, and contraceptive methods (oral and emergency).
3. Maternal well-being: Including postpartum depression and domestic violence (DV).
4. Regional disparities: Contrasting the impact in Tokyo, where emergency measures were prolonged, against non-Tokyo regions with less stringent restrictions.

Methodology

• Study Design: A nationwide, retrospective, cross-sectional survey conducted in March 2022, immediately following the lifting of COVID-19 emergency restrictions in Japan.
• Participants: 305 obstetricians and gynecologists (response rate: 24.8%) recruited from a nationwide physician survey panel (PlamedPlus). Inclusion criteria required board certification or practicing status with childbirth management experience.
• Data Collection: A structured, self-administered online questionnaire asked physicians to retrospectively compare observed trends during the pandemic against the pre-pandemic period. Response options were "increase," "no change," "decrease," or "unsure."
• Variables Analyzed:
  • Childbirth/ART: Sato-gaeri frequency, ART cycles, elective oocyte cryopreservation, inter-facility gamete transfer.
  • Maternal Health: Postpartum depression, suspected domestic violence.
  • Reproductive Behaviors: Demand for oral contraceptives, emergency contraceptive pills, and induced abortion.
• Statistical Analysis: Regional differences (Tokyo vs. non-Tokyo) were analyzed using Chi-square ($\chi^2$) tests or Fisher's exact tests. Responses were dichotomized into "increase" versus "non-increase" for 2x2 table construction. Significance was set at $p < 0.05$.
• Ethical Considerations: The study utilized aggregate physician observations without collecting individual patient data. Formal ethics approval was deemed unnecessary under Japanese guidelines for non-interventional surveys of professional observations, though the study adhered to sociological research ethical principles.

Key Results

• Disruption of Support Systems: Over half of the respondents (55.4%) reported a decline in Sato-gaeri childbirth nationwide. This decline was observed across all regions, indicating a systemic breakdown of the traditional family-based postpartum support model.
• Maternal Mental Health: Postpartum depression was reported to have increased nationwide (36.8% of respondents noted an increase), with no region reporting a decrease.
• Regional Disparities (Tokyo vs. Non-Tokyo):
  • Contraceptive Demand: Physicians in Tokyo reported significantly higher increases in demand for oral contraceptives (34.1% vs. 19.9% in non-Tokyo, $p=0.037$) and emergency contraceptive pills (29.7% vs. 17.2%, $p=0.037$).
  • Domestic Violence: Reports of suspected domestic violence were significantly higher in Tokyo (24.4% vs. 11.8%, $p=0.010$).
  • ART and Abortion: While ART-related indicators showed a trend toward increased demand in Tokyo, these differences were not statistically significant. Induced abortion rates were generally reported as unchanged or decreased, with no significant regional variation.
• ART Trends: Overall ART demand showed mixed results (17.9% increase, 14.8% decrease), with no significant regional variation in ART cycles, elective oocyte cryopreservation, or inter-facility transfers.

Key Contributions

1. Documentation of Structural Fragility: The study provides empirical evidence that Japan's reliance on family-centered maternal care is structurally fragile. The pandemic exposed how mobility restrictions could rapidly dismantle informal support networks, leading to maternal isolation.
2. Physician-Reported Insights on Sensitive Topics: By utilizing physician observations rather than patient self-reports, the study captured data on sensitive, underreported issues such as postpartum depression, domestic violence, and shifts in contraceptive demand during a crisis.
3. Regional Stratification: The research highlights that the impact of the pandemic was not uniform, with urban centers like Tokyo experiencing distinct increases in reproductive health service demand (contraception) and social stressors (DV) compared to other regions.

Significance and Claims
The paper claims that the COVID-19 pandemic acted as a stress test that revealed the urgent need for resilient, multi-layered maternal support systems in Japan. The authors argue that the disruption of Sato-gaeri and the subsequent rise in maternal isolation and depression underscore the insufficiency of a system dependent solely on family support.

The study posits that future policy must move beyond family dependency to integrate community, medical, and digital support (e.g., telehealth) to ensure continuity of care during crises. The observed regional disparities suggest that policy interventions must be tailored to address specific urban vulnerabilities, such as crowded living conditions and economic insecurity, which may exacerbate domestic violence and mental health challenges.

The authors maintain a modest tone, acknowledging limitations including the reliance on subjective physician observations (potential recall and social desirability bias), the relatively small sample size for specific ART sub-questions, and the lack of multivariate analysis. They conclude that while the findings are specific to Japan, the issues of maternal isolation and the need for equitable access to reproductive care are relevant globally for future pandemic preparedness.