Table 3.
Kitagawa-Oaxaca-Blinder decomposition of racial disparities in biological age acceleration
| PhenoAge |
KDM Biological Age |
Homeostatic Dysregulation |
|||||||
|---|---|---|---|---|---|---|---|---|---|
| Coeff. (SE) | p Value | % | Coeff. (SE) | p Value | % | Coeff. (SE) | p Value | % | |
|
| |||||||||
| Overall | |||||||||
| Black-White disparity in outcome | 2.622 (0.282) |
*** | — | 11.422 (0.884) |
*** | — | 0.412 (0.027) |
*** | — |
| Endowments | 1.229 (0.170) |
*** | 46.89 | 5.045 (0.516) |
*** | 44.17 | 0.058 (0.018) |
** | 14.20 |
| Coefficients | 2.347 (0.485) |
*** | 89.49 | 9.851 (1.554) |
*** | 86.24 | 0.417 (0.043) |
*** | 101.37 |
| Interaction | −0.954 (0.437) |
* | −36.37 | −3.474 (1.344) |
* | −30.41 | −0.064 (0.039) |
−15.57 | |
| Endowments | |||||||||
| SES | 1.436 (0.116) |
*** | 54.77 | 4.077 (0.358) |
*** | 35.69 | 0.111 (0.012) |
*** | 26.85 |
| Stress burden | 0.301 (0.067) |
*** | 11.46 | 0.856 (0.201) |
*** | 7.49 | 0.027 (0.007) |
*** | 6.61 |
| Age | −0.189 (0.197) |
−7.22 | 0.305 (0.617) |
2.67 | −0.102 (0.021) |
*** | −24.72 | ||
| Sex | −0.185 (0.043) |
*** | −7.04 | −0.549 (0.129) |
*** | −4.81 | −0.012 (0.003) |
*** | −2.85 |
| Cohort | −0.469 (0.205) |
* | −17.87 | −0.474 (0.634) |
−4.15 | −0.006 (0.022) |
−1.45 | ||
| Region of birth (1 = South) | 0.335 (0.097) |
** | 12.79 | 0.830 (0.305) |
** | 7.27 | 0.040 (0.010) |
*** | 9.76 |
| Coefficients | |||||||||
| SES | 0.129 (0.103) |
4.91 | 0.209 (0.313) |
1.83 | 0.011 (0.009) |
2.77 | |||
| Stress burden | 0.051 (0.022) |
* | 1.96 | 0.141 (0.068) |
* | 1.23 | 0.005 (0.002) |
* | 1.16 |
| Age | −0.372 (9.103) |
−14.18 | −4.453 (29.328) |
−38.99 | −0.437 (0.831) |
−106.08 | |||
| Sex | 0.488 (0.331) |
18.62 | −0.340 (1.084) |
−2.98 | 0.023 (0.031) |
5.67 | |||
| Cohort | 2.547 (3.561) |
97.14 | 2.509 (11.634) |
21.97 | 0.133 (0.333) |
32.19 | |||
| Region of birth (1 = South) | −0.500 (0.173) |
** | −19.05 | −1.791 (0.545) |
** | −15.68 | −0.034 (0.016) |
* | −8.23 |
| Interaction | |||||||||
| SES | −0.374 (0.299) |
−14.27 | −0.607 (0.910) |
−5.32 | −0.033 (0.028) |
−8.05 | |||
| Stress burden | −0.356 (0.133) |
** | −13.59 | −0.984 (0.432) |
* | −8.62 | −0.033 (0.013) |
* | −8.11 |
| Age | 0.023 (0.551) |
0.86 | 0.270 (1.776) |
2.36 | 0.026 (0.050) |
6.42 | |||
| Sex | 0.058 (0.041) |
2.22 | −0.041 (0.129) |
−0.35 | 0.003 (0.004) |
0.68 | |||
| Cohort | 0.393 (0.550) |
14.99 | 0.387 (1.796) |
3.39 | 0.020 (0.051) |
4.97 | |||
| Region of birth (1 = South) | −0.697 (0.243) |
** | −26.58 | −2.498 (0.763) |
** | −21.87 | −0.047 (0.023) |
* | −11.48 |
Notes: Results of threefold decomposition that decomposes Black-White disparity. n = 6,782.
*
p<.05;
**
p<.01;
***
p<.001