Headache among combat-exposed veterans and service members and its relation to mild TBI history and other factors: A LIMBIC-CENC study

William Walker ^1* Sarah W. Clark ² Kaleb Eppich ³ Elisabeth Wilde ³ Aaron Martin ⁴ chelsea allen ³ Melissa M Cortez ³ Mary Jo Pugh ³ Samuel Walton ⁵ Kimbra Kenney ⁶

• ¹ Virginia Commonwealth University, Richmond, United States
• ² Hunter Holmes McGuire VA Medical Center, United States Department of Veterans Affairs, Richmond, Virginia, United States
• ³ The University of Utah, Salt Lake City, Utah, United States
• ⁴ James A. Haley Veterans’ Hospital, United States Department of Veterans Affairs, Tampa, Florida, United States
• ⁵ School of Medicine, Virginia Commonwealth University, Richmond, Virginia, United States
• ⁶ Department of Neurology, Uniformed Services University of the Health Sciences, Bethesda, Illinois, United States

In the published article, there was an error in “Figure 1. Study Sample Inclusion Flow Diagram”. After publication, we were informed that one site’s IRB retroactively has deemed their data to be invalid, must be destroyed, and can’t be published (Site #10; Eisenhower Army Medical Center; located near Augusta, GA). This publication used data from 14 participants at this site of whom only 11 were included in the final data after applying secondary analysis inclusion and exclusion criteria. This update figure reflects those changes. Related manuscript text edits have been made as well. We have consequently completed our re-analysis excluding that data and updated the results data in all main Tables and supplemental Tables (Table 1. Headache (HA) Prevalence (Experienced HA Lately) stratified by # lifetime mTBIs.; Table 2. Headache (HA) Impact stratified by # lifetime mTBIs.; Table 3. Post-hoc comparisons of HIT-6 Headache Severity categories by # lifetime mTBIs.; Table 4. Categorical covariates stratified by absence/presence of Headache (HA).; Table 5. Continuous covariates stratified by absence/presence of Headache (HA).; Table 6. Multivariable Logistic Regression - Experience Headaches Lately Yes/No.; Table 7. Multivariable linear regression for HIT-6 total score (Multiple R2 = 0.350).; Supplemental Table 1. Post-hoc comparisons HIT-6 Total Sore by Number of mild TBI groups.; Supplemental Table 2. Post-hoc comparisons of HIT-6 Impact categories by Number of mild TBI groups.; Supplemental Table 3. Prevalence of Headache Lately; Logistic regression sensitivity analysis including only mTBI positive participants (N=1234).; Supplemental Table 4. Headache Impact (HIT6 Total Score); Linear Regression sensitivity analysis including only mTBI positive participants who endorsed HA Lately (N=853). Related text edits were also made and our delineated in the uploaded Corrigendum submission file.The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way.