| Reference Country, year | Types of trauma | Trauma and pregnancy | Non-pregnancy trauma | Principle results |
| United States, 2015 | AVP | 324,535 | 14,719,533 | For a comparable violent shock, the prevalence of moderate and severe trauma was similar in pregnant and non-pregnant women |
| Canada, 2015 | AVP | 5936 | 59,360 | Mortality was reduced in pregnant women but the lesion severity score was lower in these women (probable recruitment bias due to pregnant women who consult mainly to be reassured) |
| United States, 2005 | All | 1195 | 76,127 | |
| United States, 2011 | All | 3763 | 214,394 | In multivariate analysis after matching, mortality was significantly reduced in pregnant women (OR: 0.59; 95% CI: 0.38 - 0.89) |
| United States, 2017 | All | 1148 | 43,608 | Mortality was twice as high in pregnant women, while the traumatic injury severity score was lower in these women. |
| United Kingdom, 2016 | All | 173 | 14,967 | The severity of the lesions was similar in pregnant and non-pregnant women. Mortality was similar in the two groups: 5.1 versus 4.1%; p = 0.70 |
| Reference Country, year | Types of trauma | Trauma and pregnancy | Pregnancies without trauma | Principle results |
| United States, 2013 | AVP | 25,168 | 878,546 | 30% increase in preterm delivery, HRP and RPM after AVP. Risk of stillbirth multiplied by 3 in the absence of a seat belt |
| Australia, 2012 | AVP | 2147 | 604,380 | Poor perinatal prognosis in women who gave birth during hospitalization for trauma. Among women still pregnant after discharge, the prevalence of PRH remains higher than in the general population, including after minor trauma (ISS score < 9) |
| United States, 2008 | Falls | 693 | 2079 | |
| United States, 2004 | All | 10,316 | 4,833,286 | |
| Israel, 2014 | Minor trauma | 51 | 1024 | The prevalence of a composite score (HRP or childbirth < 37 WA or birth weight < 2500 g) was lower in traumatized women: 9.4 versus 12.9%; p = 0.04 |