Socioeconomic status, John Henryism and blood pressure among African-Americans in the Jackson Heart Study

• Published in: Social science & medicine (1982) Vol. 93; pp. 139 - 146
• Main Authors: Subramanyam, Malavika A., James, Sherman A., Diez-Roux, Ana V., Hickson, DeMarc A., Sarpong, Daniel, Sims, Mario, Taylor, Herman A., Wyatt, Sharon B.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.09.2013; Elsevier; Pergamon Press Inc
• Subjects: Adaptation, Psychological; Adult; Africa; African American; African Americans; Aged; Aged, 80 and over; Arterial hypertension. Arterial hypotension; Biological and medical sciences; Black or African American - psychology; Black or African American - statistics & numerical data; Blood and lymphatic vessels; Blood Pressure; Cardiology. Vascular system; Cohort Studies; Coping; Epidemiology; Female; Females; General aspects; Health care; Health Status Disparities; Henryism, John; Humans; Hypertension; Hypertension - ethnology; Hypertension - psychology; Income; John Henryism; Low Income Groups; Male; Males; Medical sciences; Middle Aged; Miscellaneous; Mississippi; Psychological Theory; Public health. Hygiene; Public health. Hygiene-occupational medicine; Regression analysis; Sex Distribution; Social Class; Socioeconomic factors; Socioeconomic Status; Stress, Psychological - ethnology; Stress, Psychological - psychology; Survival strategy; U.S.A; United States; Values; Young Adult; Mississippi; United States; North America; America; Hypertension; John Henryism; Socioeconomic status; United States; African American; Human; Cardiovascular disease; Arterial pressure; Social medicine; Blood pressure; Epidemiology; Social aspect
• ISSN: 0277-9536; 1873-5347; 1873-5347
• DOI: 10.1016/j.socscimed.2013.06.016

John Henryism connotes a strong behavioral predisposition to engage in effortful, active coping with difficult social and economic stressors. This behavioral predisposition is measured by the 12 item John Henryism Scale for Active Coping (JHAC). The John Henry hypothesis predicts that the well-known inverse socioeconomic status (SES)-blood pressure association will be stronger among persons who score high rather than low on the JHAC. We tested this hypothesis in a large African American cohort using baseline data from the Jackson Heart Study. Unlike previous studies, we used multiple indicators of SES: income, education, occupation, childhood SES and cumulative SES. Because the hypothesis is most relevant for adults still in the labor force, we excluded retired participants, yielding a sample size of 3978. Gender-specific Poisson regression models for hypertension adjusting for age, John Henryism, SES, and a John Henryism-SES interaction term, were fit to examine associations. Separate models were fit for each SES indicator. We found some evidence that John Henryism modified the association between income and hypertension in men: low income was associated with higher prevalence of hypertension in men who scored high on John Henryism (prevalence ratio (PR) for low vs. high income tertile 1.12), but with lower hypertension prevalence among men who scored low on John Henryism (PR 0.85, one sided P value for multiplicative interaction <0.05). For women, the association of low income with higher hypertension prevalence was stronger at lower than higher levels of John Henryism (PR 1.27 and 1.06 at low and high levels of John Henryism respectively, P value<0.05). There was no evidence that John Henryism modified the associations of hypertension with other SES indicators in men or women. The modest support of the John Henryism Hypothesis in men only, adds to the literature on this subject, but underscores questions regarding the gender, spatial, socioeconomic and historical contexts in which the hypothesis is valid. •John Henryism connotes a strong behavioral predisposition of effortful active coping.•Inverse SES-BP association hypothesized as stronger with high than low John Henryism.•We tested this hypothesis using the baseline data from the Jackson Heart Study.•Unlike previous studies we used multiple indicators of socioeconomic status.•Modest support found raises questions about context in which hypothesis is applicable.