So, from here:
Of the total 63 334 deliveries, 516 (0.8%) resulted in a stillbirth (Table 2), and 2482 (3.9%) were by patients with SCT. The prevalence of stillbirth was 1.1% among patients with SCT compared with 0.8% in the general population (Table 2), and stillbirth was found to be associated with SCT after adjusting for all risk factors. In the fully adjusted model, patients with SCT were at higher risk of stillbirth relative to patients without SCT (adjusted odds ratio [aOR], 8.94; 95% CI, 1.05-75.79; P = .045) (Figure 3; eTable 2 in the Supplement).
I’ve simply not got the maths or background to be able to work this out. From here:
A study from the Centers for Disease Control and Prevention (CDC) found that Black mothers were more than twice as likely to experience stillbirth compared to Hispanic and white mothers. While the full reason for these racial disparities is not clear, differences in health problems that occur during pregnancy or underlying health conditions may be linked to these differences.
My reading of this is that SCT explains about half that difference. That about right? Or have I cocked that, as only 10% of Black Americans have SCT……