In supplementary analyses (not shown), we re-estimated Model 3 using three alternative operationalizations of stressors: a) only the eight types of stressors and not the number of stressors, b) only the number of stressors and not the types of stressors, and c) a global composite stressor variable created by summing the standardized values for all the eight stressors and re-standardizing the final measure. The results were robust to these alternative specifications.