4.1 Main Results
Our first main finding is that the pandemic and associated shutdowns social distancing measures are associated with decreases in abuse, accident, and female assault visits treated in emergency departments. Figure 2 shows event studies in the number of visits per zip-week, with event study coefficients pooled into two week periods (see Eq. 3) and overall difference-in-difference coefficients pooled into the early and later phases of the pandemic (see Eq. 4). The top left panel contains results for abuse visits, where the provider knows or suspects that the injuries are a result of domestic violence, showing an average decrease of about 0.02 visits per zip-week which translates to a 35% reduction relative to the prior years’ average, between March and June of 2020. The largest decrease, about .04 visits per zip-week (68% reduction), occurs in weeks 13–18. Likewise, the top right panel shows results for all female assault visits, showing an average decrease of 0.2 visits per zip-week (30% decrease) over the same period, with the largest decrease (about .35 visits per zip-week or about 52%) also occurring in weeks 13–18. Accident visits decreased by 4.48 visits per zip-week (38%) in the early phase, with even larger decreases of about 7 visits per zip-week (roughly 58% decrease) occurring in weeks 13–16. The magnitudes of the declines in accidental visits are in line with those estimated by Cantor et al. (2022) for decreases in preventive care visits for colonoscopies (34% relative reduction) and mammograms (38% relative reduction) immediately after the implementation of shelter-in-place policies, suggesting that the change is likely to be driven by care utilization rather than the number of injuries for which patients would normally seek emergency care.[14] Lastly, unlike accidental injury and overall assault visits, gun assault visits increased in the early (March-June) phase of the pandemic by about .02 visits per zip-week (45%). This contrasting result would be consistent with some victims forgoing care unless they believe their injuries will be more dangerous than any COVID-19 infection risk or retaliatory violence that may result from accessing emergency medical care.
In the later phase (July to December), accident visits treated in emergency departments reverted towards baseline levels but remained approximately 25% below prior-year averages. In contrast, female assault visits recovered to 16% below prior-year averages. Abuse visits remained 10% lower than prior-year averages, but this difference was not statistically significant as these visits are relatively rare compared to the other visit categories. Gun assault visits remained 47% higher than prior years during this later phase.
The differences between these effects are consistent with decreases in care utilization rather than decreases in underlying victimization. This accords with other studies about domestic violence during the pandemic: Erten et al. (2021) find that 911 calls increased in the early weeks of the pandemic and decreased after the CARES Act economic impact payments were disbursed to eligible households. Miller et al. (2022) show that increases in 911 calls were concentrated prior to the implementation of stay-at-home orders. Because we find more pronounced decreases in assault compared to accident visits during the early period when 911 calls were increasing, it is unlikely that these decreases in visits coincide with decreases in the underlying number of domestic violence injuries that would normally cause victims to seek emergency medical care. Rather, victims likely declined to seek care for other reasons such as COVID-19 risk or increased partner control, which we will explore in Section 4.2. We also compare our main results to those limiting the sample to geographic areas included in Leslie and Wilson (2020), Erten et. al. (2021), and Miller et. al. (2022), in Fig. 9 in Appendix B; our main results, while underpowered, are qualitatively similar in those samples.
4.2 Mechanisms
We explore the severity of victim injuries to examine how victims with severe injuries sought medical care for their injuries. Figure 3 illustrates that decreases in female assault visits are concentrated in minor injuries (Injury Severity Score Category 1) while severe or life-threatening emergency department visits for female assaults (Injury Severity Score Categories 2–4) remained more stable. Female assault visits for minor injuries declined by 0.50 visits per zip-week (a 32% decrease relative to prior year averages) in the early phase of the pandemic and 0.28 visits per zip-week (18% decrease) in the later phase compared to prior years. By contrast, visits for severe assaults (Injury Severity Score Categories 2–4) were not statistically different from prior years across early and late periods.
The left panel of Fig. 3 shows accident visits by injury severity, indicating that minor injury visits declined by 12.25 visits per zip-week, or 42% of the past years’ average, in the early pandemic months (May-June). Late pandemic minor accidental injury visits declined less relative to prior years, decreasing by 8.61 visits per zip-week in July to December (30% relative decrease). Contrary to severe female assaults which remained stable relative to prior-year averages, severe accidental injuries decreased by almost one visit per zip-week (32% decrease) in the early pandemic months, followed by a decrease of 0.25 visits, or 11%, in later pandemic months.
We supplement this analysis using reports of domestic and intimate partner assaults reported to police during the same timeframe (see Appendix C, Fig. 10) and find similar heterogeneity across injury severity stemming from reported crimes. Domestic violence assaults resulting in major injuries declined by at most 3–4%, suggesting that the large declines in emergency department visits that we find in our sample are unlikely to be driven by decreases in the incidence of domestic violence injuries. Furthermore, changes in reported domestic violence crimes resulting in major injuries are similar whether 2019 is included in or excluded from the comparison time period, suggesting that our choice to exclude it due to poor medical claims data reporting is unlikely to affect our results.
Taken together, heterogeneity by injury severity is suggestive of a decrease in care utilization rather than changes in levels of domestic violence. Severe female assault visits to the emergency department declined alongside severe accidents in the early months of the pandemic. But relative to severe accidents and abuse, severe female assaults returned to prior-year levels in the later phase (July-December) of the pandemic. These estimates would be consistent with either severe injuries increasing during the early phase of the pandemic and victims delaying or forgoing care, or severe injuries remaining stable during the early phase and becoming more likely during the later phase. Either scenario is plausible given that victims’ response to the COVID-19 pandemic may have softened over time leading them to eventually seek care, or victims experiencing domestic violence incidents during the early phase that did not result in significant outside intervention (crime incident report, arrest, or medical care) may have experienced subsequent escalations in violence within the relationship resulting in more severe injuries later in the year.
Because the underlying dataset we use to construct our panel consists of insurance claims, a primary concern is that pandemic-related job loss resulted in artificial decreases in claims in our data if patients were no longer eligible to appear in the sample due to loss of insurance but were still visiting emergency departments. To mitigate this concern, we show trends in abuse and female assault visits by insurance payer type in Fig. 4. As described in Section 2, “low loss” payers in Panel A are those associated with government-sponsored insurance programs such as Medicaid, Medicare, and ACA exchange plans, so patients on these plans are less likely to lose their health insurance after a pandemic-related job loss. “Regular commercial” payers in Panel B are other payers that are likely to contain primarily employer-based plans.[15]
Figure 4 displays similar trends in female assault visits across low-loss payers and regular commercial payers, suggesting that pandemic-induced decreases in visits are unlikely to be driven by patients’ exit from the sample due to insurance loss and likely reflect actual decreases in emergency medical care utilization by domestic violence victims. Relative to the full sample (Fig. 2), where abuse visits fell in the early stages of the pandemic by approximately 31%, visits from patients insured by “low-loss” payers declined by 40% and commercial payers declined by 31%. Similarly, relative to the 30% reduction in assault visits during the early stage of the pandemic, among “low-loss” payers, assault visits dropped by 30% and visits from patients with commercial insurance decreased by 28%.
Finally, we explore how victims may have elected to forgo care for pandemic-related reasons such as increased partner control due to increased time at home together. We examine the timing of domestic violence visits to examine if changes in time spent at home during lockdowns altered medical care timing. Prior to the pandemic, victims may have been more able to seek care on weekdays while their partners were at work. Detailed in Fig. 7 in Appendix B, we do not find strong evidence that the pandemic shifted the timing of visits within the week in response to changes in victims’ or abusive partners’ work schedules, but cannot fully rule out a partner control mechanism given the nature of our data.
4.4 Robustness
Figure 5 shows the robustness of the main results to two alternative specifications. Overall, results are qualitatively similar across specifications and suggest a decline in emergency medical care utilization for domestic violence injuries during the early weeks of the pandemic when mobility was lower. The first alternative specification drops “sparse zips” – those where assault and abuse visits are the most rare due to having few billing providers in our sample. We classify a zip as sparse if there is at least one year in the panel where providers in that three-digit zip do not report any assault or abuse visits. The left side of Panel A shows results for abuse visits; in the early phase of the pandemic, abuse visits decline by about 32% of the zip-week mean in the main sample and about 70% of the zip-week mean in this sample where sparse zips are dropped; this is unsurprising, as the three-digit zips with more assault visits provide most of the variation. We see a similar pattern for female assault visits in Panel B: in the early phase, female assault visits in the sample dropping sparse zips decline by about 67% (compared to 30% in the main sample) and by about 37% in the later phase (compared to 17% in the main sample).
The next alternative specification removes three-digit zip fixed effects to allow for the possibility of pandemic-induced migration. The right side of Panel A shows results for abuse visits, finding a decline of 34% with a return to prior-year averages in the later part of the pandemic. Female assaults dropped 29% in the early part of the pandemic and 16% in the later part of the pandemic, nearly identical to the main sample decline, suggesting that results are not affected by migration across three-digit zip areas.