Table 4.

Poisson regression model of risk factors for non-catheter-related venous thromboembolism among adults with sickle cell disease

Variable	RR	CI
Age* (years)
31–40	1.26	0.74–2.13
41–50	1.27	0.74–2.19
51–60	1.85	0.98–3.51
> 60	0.87	0.32–2.41
Female	1.52	1.00–2.34
Sickle variant genotype	1.77‡	1.18–2.66
Avascular necrosis	1.46	0.98–2.17
Tricuspid regurgitant jet velocity ≥2.5 m/s	1.65†	1.12–2.45

RR = relative risk, CI = 95% confidence interval

^*Reference age category is 18–30 years.

^†p < 0.05,

^‡p < 0.01