Divergent Utilization of Healthcare Following Traumatic Life Events

Traumatic life events may shape how individuals utilize healthcare, yet their impact on medical and dental service utilization is underexplored. This study investigates how such events influence subsequent healthcare use. We analyzed data from three waves of the Mexican Health and Aging Study, the first longitudinal cohort in Mexico of middle-aged and older adults. The analytic sample comprised 17,424 unique individuals across 39,875 total observations. Three traumatic events were examined in relation to their effects on medical and dental service use, (i) experience of a natural disaster, (ii) experience of the death of a child, and (iii) experience of a crime or accident. We combined propensity score weighting with multivariable mixed-effects logistic regression to account for both confounding and correlation arising from repeated measures. We estimated the effect of exposure to each traumatic event by parametric g-computation, calculating risk differences (RDs) with 95% confidence intervals (CIs). Exposure to a natural disaster increased medical service use by 4.2% (95% CI: 2.2 to 6.2) while reducing utilization of dental care by 4.8% (95% CI: –7.0 to –2.5). The death of a child increased medical service use by 4.9% (95% CI: 2.7 to 7.2) while reducing utilization of dental care by 6.0% (95% CI: –8.6 to –3.4). Crime or accidents increased utilization of medical services by 12.7% (95% CI: 11.1 to 14.2) while having no clear effect on utilization of dental care. Traumatic events have substantial, and differential, impacts on healthcare utilization. In particular, amongst middle-aged and older adults in Mexico, natural disasters and the death of a child have divergent effects on the utilization of medical versus dental care, whilst crime and accidents only affect medical care. Future research into this underdeveloped area may help to develop a more precise understanding of the underlying mechanisms.