Table 4.
Robust linear regression estimates of HPA axis biomarkers (n=1,252).
| Cortisol | DHEAS | Cortisol:DHEAS ratio | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (a) | (b) | (a) | (b) | (a) | (b) | |||||||||||||
| Focal Variables | ||||||||||||||||||
| Black | .159 | (.076) | * | −.085 | (.141) | −.170 | (.044) | *** | −.021 | (.069) | .332 | (.077) | *** | −.051 | (.150) | |||
| GSS (scale) | −.002 | (.004) | .000 | (.002) | — | −.001 | (.004) | — | ||||||||||
| Low (reference) | — | — | — | — | — | |||||||||||||
| Middle | — | −.014 | (.085) | — | .028 | (.066) | — | −.036 | (.112) | |||||||||
| High | — | .027 | (.093) | — | −.024 | (.076) | — | .052 | (.123) | |||||||||
| Interactions [Black ×…] | ||||||||||||||||||
| GSS (scale) | .013 | (.004) | ** | −.002 | (.003) | — | .015 | (.005) | ** | — | ||||||||
| Low (reference) | — | — | — | — | — | |||||||||||||
| Middle | — | .256 | (.164) | — | −.197 | (.097) | * | — | .434 | (.167) | * | |||||||
| High | — | .379 | (.129) | ** | — | −.179 | (.089) | * | — | .552 | (.171) | ** | ||||||
| Intercept | 1.916 | (.307) | *** | 1.924 | (304) | *** | 6.083 | (.270) | *** | 6.064 | (.292) | *** | −4.254 | (.376) | *** | −4.232 | (.395) | *** |
| Adjusted R-squared | .096 | .097 | .403 | .405 | .154 | .160 | ||||||||||||
Notes: Unstandardized coefficients are reported with robust standard errors in parentheses. All estimates adjust for covariates, biomarker controls, post-stratification weighting, and clustering at the census block group level. Cortisol, DHEAS, and cortisol:DHEAS ratio are in natural logarithmic form. GSS=goal-striving stress. Scaled GSS scores are mean-centered.
*
p<.05,
**
p<.01,
***
p<.001 (two-tailed).