Subjective social status predicts wintertime febrile acute respiratory illness among women healthcare personnel.

We ask whether subjective social status (SSS) predicts rates of wintertime febrile acute respiratory illness (ARI). Methods: 1,373 women and 346 men were enrolled from September 1 through November 30, 2010 as part of a prospective cohort study of health care personnel (HCP) at two medical centers. A questionnaire was completed at enrollment followed by 20 weeks of surveillance. ARI was an illness with fever and cough self-reported via weekly telephone or Internet-based surveillance. Results: For both sexes, lower SSS was associated with younger age, less education, lower neighborhood household income, being unmarried, lower occupational status, working in outpatient settings, and poorer self-rated health status. Demographic and occupational covariates explained 23% and 42% of the variance (R-2) in SSS among women and men, respectively. Smoking, exercise frequency, and sleep quality were also associated with SSS, but these factors explained little additional variance (3-4%). Among women HCP, lower SSS at enrollment was associated with higher rates of subsequent ARI (unadjusted beta = -.21 [+/-.05], p < .001 for ordinal data). Adjusting for all covariates reduced the effect size of the SSS minimally (adjusted beta = -.19 [+/-.06], p < .001). Among men HCP, there was no univariate SSS-ARI association and after adjusting for all covariates the effect was opposite of our hypothesis (adjusted beta = .33 [+/-.17], p < .05). Conclusions: Women (but not men) with lower SSS were more likely to report an ARI during surveillance, and the SSS-ARI association was independent of demographics, occupational status, health, and health behaviors.