We thank Prof. Atamanalp for his interest in our article  and appreciate his interesting “Letter to the Editor”. His impressive database on sigmoid volvulus and ileosigmoid knotting [2, 3] significantly contributes to the literature on this topic because it highlights a disease relatively common in sub-Saharan Africa, Latin America, and Eastern Europe but less so in North America and Western Europe .
Thus far, the data support high fibre diet as a risk factor for sigmoid volvulus . Other factors that have been implicated in sigmoid volvulus include anatomic predispositions . However, questions remain. How much do environmental factors (such as high fibre diet) contribute to risk compared with genetic or anatomic factors?
Epidemiologic studies contribute to our understanding of disease processes and their inherent risk factors. They can have important implications for prevention, management and outcomes. To date, there is a great disparity in access and availability of data. Most published data come from high resource settings. Even in high resource settings, there is disparate access to information on minority populations. These disparities in data contribute to inequalities in cares and outcomes.
The COVID-19 pandemic has demonstrated that diseases no longer stay endemic to resource-rich or resource-poor settings. We live in an increasingly globalized world where it is important to understand disease processes on a global scale, not just in our local population. There are growing rates of travel, immigration, and emigration. Even in our local environment, we are likely to encounter individuals from different communities, cultures, and environments. We need to be prepared to respond appropriately. For example, Minnesota is home to a large Somali community . While some populations assimilate to new environments, many retain their cultural heritage where possible. Data from differing regions, as well as immigrant and refugee populations, can help us better understand the relative contributions of environmental and genetic contributions to diseases.
In summary, we must commit more equitable resources towards understanding all diseases, especially ones which are more common in lower resourced settings and amongst vulnerable populations. This would include comprehensive data collection to compare conditions across different populations with differing risk factors. Through such analyses, we can gather more information on relative risk of specific factors. Depending on the identified risk factors, interventions can be introduced to then reduce excess risk of morbidity and mortality.
Rickard J, Pohl L, Abahuje E, et al. (2020) Indications and outcomes for non-trauma emergency laparotomy: a comparison of Rwanda, South Africa, and the USA. World J Surg. https://doi.org/10.1007/s00268-020-05862-y
Atamanalp SS (2019) Sigmoid volvulus: the first one thousand-case single center series in the world. Eur J Trauma Emerg Surg 45:175–176
Atamanalp SS (2018) Ileosigmoid knotting: one of the largest single-center series. Pak J Med Sci 34:671–675
Raveenthiran V, Madiba TE, Atamanalp SS et al (2010) Volvulus of the sigmoid colon. Colorectal Dis 12:e1-17
Somali Refugees: Centers for Disease Control and Prevention (2018) [27 December 2021]. https://www.cdc.gov/immigrantrefugeehealth/profiles/somali/populationMovements.html.
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Rickard, J., Chu, K. Author’s Reply: Indications and Outcomes for Non-Trauma Emergency Laparotomy: A Comparison of Rwanda, South Africa, and the USA. World J Surg (2021). https://doi.org/10.1007/s00268-021-05955-2