Table 4.
Prevalence ratios of hypertension associated with SES indicators stratified by level of John Henryism, and results of tests for multiplicative interaction between John Henryism and SES categories, among female non-retirees in the Jackson Heart Study.
| Prevalence ratios (95% CI) | Interaction coefficients and global P values for interaction | ||||
|---|---|---|---|---|---|
|
| |||||
| Characteristics | Alla | Low John Henryismb | High John Henryismb | P value for SES*John Henryism interactionc | P value for SES*John Henryism interactiond |
| Income | N=1121 | N=1005 | |||
| Low tertile | 1.16 (1.06, 1.27) | 1.27 (1.11, 1.44) | 1.06 (0.93, 1.20) | -0.18 (0.09)* | -0.16 (0.10) |
| Middle tertile | 1.16 (1.06, 1.27) | 1.23 (1.08, 1.40) | 1.09 (0.96, 1.24) | -0.13 (0.9) | -0.11 (0.10) |
| Top tertile | 1 | 1 | 1 | P value 0.06e | P value 0.12e |
| Education | N=1131 | N=1010 | |||
| ≤HS | 1.11 (1.01, 1.23) | 1.16 (1.00, 1.35) | 1.05 (0.92, 1.20) | -0.10 (0.10) | -0.04 (0.10) |
| HS | 1.13 (1.03, 1.24) | 1.26 (1.10, 1.43) | 1.01 (0.89, 1.16) | -0.21 (0.09)* | -0.19 (0.10)* |
| Some college | 1.14 (1.04, 1.25) | 1.21 (1.06, 1.37) | 1.05 (0.92, 1.21) | -0.14 (0.09) | -0.11 (0.10) |
| ≥College | 1 | 1 | 1 | P value 0.07 e | P value 0.13 e |
| Occupation | N=1120 | N=995 | |||
| Manual | 1.27 (1.14, 1.41) | 1.26 (1.08, 1.47) | 1.28 (1.11, 1.48) | 0.02 (0.11) | 0.09 (0.11) |
| Sales | 1.11 (1.00, 1.22) | 1.11 (0.97, 1.27) | 1.11 (0.95, 1.28) | -0.003 (0.10) | 0.01 (0.11) |
| Service | 1.15 (1.06, 1.25) | 1.18 (1.05, 1.33) | 1.18 (0.99, 1.26) | -0.06 (0.08) | -0.04 (0.09) |
| Management | 1 | 1 | 1 | P value 042 e | P value 0.33 e |
| Childhood SES | N=1074 | N=974 | |||
| Low tertile | 1.01 (0.90, 1.12) | 1.00 (0.86, 1.16) | 1.01 (0.87, 1.18) | -0.02 (0.08) | -0.01 (0.09) |
| Middle tertile | 1.09 (1.00, 1.20) | 1.07 (0.94, 1.22) | 1.12 (0.98, 1.28) | 0.03 (0.09) | 0.02 (0.09) |
| High tertile | 1 | 1 | 1 | P value 0.43 e | P value 0.46 e |
| Cumulative SES | N=1128 | N=1010 | |||
| Low tertile | 1.16 (1.06, 1.27) | 1.24 (1.09, 1.41) | 1.08 (0.95, 1.22) | -0.14 (0.08) | -0.12 (0.09) |
| Middle tertile | 1.09 (1.00, 1.20) | 1.17 (1.03, 1.33) | 1.01 (0.89, 1.16) | -0.15 (0.10) | -0.12 (0.10) |
| High tertile | 1 | 1 | 1 | P value 0.10e | P value 0.17e |
HS = High school; N = sample size; SES = Socioeconomic status.
=p<0.05,
=p<0.01,
=p<0.001.
Model for all male non-retirees, includes age and SES indicator.
Model includes age, SES indicator, John Henryism and SES*John Henryism interaction.
Beta estimate and standard error for the interaction terms from a model that includes age, SES indicator, John Henryism and SES*John Henryism interaction.
Beta estimate and standard error for the interaction terms from a model that includes age, SES indicator, stress score, John Henryism and SES*John Henryism interaction.
One-sided p value from the joint test of SES*John Henryism interaction terms.