Pain Trajectories among U.S. Veterans During COVID-19

Abstract

Physical pain is highly prevalent among military veterans. As stress can impact pain, COVID-19-related stressors may have heightened pain among veterans. A prospective analysis of pain could advance understanding of how veterans fared during COVID-19 and lend knowledge of risk factors important beyond the pandemic. The present study employs growth mixture modeling with a sample of U.S. veterans high in pain (N = 1,230) followed from just before COVID-19 (February 2020) to 12 months later (February 2021; 81.7% retention). We explored heterogeneous pain trajectories as well as baseline and COVID-19-related predictors of pain. Results revealed 4 pain trajectory classes: 1) Chronic Pain (17.3% of the sample); 2) Decreasing Pain (57.2% of the sample); 3) Stable Mild Pain (19.8% of the sample); and 4) Increasing Pain (5.7% of the sample). Those with childhood trauma exposure were especially likely to report chronic pain. Female and racial/ethnic minority veterans were also relatively likely to fare poorly in pain. Loneliness was associated with subsequent pain among several classes. Most veterans in our sample fared better than expected in terms of pain. However, as those with childhood trauma and certain disadvantaged groups were less likely to fare well, we add to the important literature on disparities in pain. Clinicians should identify whether loneliness and other factors impacted pain during COVID-19 among their patients to inform ongoing, person-centered pain management approaches. PERSPECTIVE: This article presents pain trajectories and correlates of pain among a high-pain sample of U.S. veterans surveyed prior to and during COVID-19. Pain clinicians should screen for childhood trauma and remain vigilant in addressing health disparities.

Keywords: COVID-19; Military; longitudinal; pain; veterans.

Figure 1.

Conceptual model using a growth mixture model with time invariant and time varying covariates Note: Here we represent all time-varying covariates as a single “TVC” variable for parsimony, note the model includes two TVCs: negative reactions to COVID-19 and loneliness.

Figure 2.

Final four-class solution for physical pain trajectories Note: baseline (pre-COVID) assessed in February 2020; 6-month assessed August 2020; 9-month assessed November 2020; 12-month assessed February 2021.