Table 4.

Sickle cell trait and incident cardiovascular disease risk factors over the course of 25 years (hazard ratios)

Hazard ratios
No./Total (%)Hazard ratio (95% CI)
Incident hypertension   
 No SCT 682/1482 (56.9) Reference 
 SCT 56/108 (60.6) 1.22 (0.91-1.65) 
Incident diabetes   
 No SCT 262/1519 (17.3) Reference 
 SCT 26/112 (23.2) 1.48 (0.96-2.27) 
Incident metabolic syndrome   
 No SCT 596/1502 (39.7) Reference 
 SCT 49/109 (45.0) 1.26 (0.92-1.74) 
Hazard ratios
No./Total (%)Hazard ratio (95% CI)
Incident hypertension   
 No SCT 682/1482 (56.9) Reference 
 SCT 56/108 (60.6) 1.22 (0.91-1.65) 
Incident diabetes   
 No SCT 262/1519 (17.3) Reference 
 SCT 26/112 (23.2) 1.48 (0.96-2.27) 
Incident metabolic syndrome   
 No SCT 596/1502 (39.7) Reference 
 SCT 49/109 (45.0) 1.26 (0.92-1.74) 

Hazard ratio derived from Cox proportional hazards model. Incidence of each CVD risk factor was identified at any follow-up examination up to year 25. Models were adjusted for sex, baseline age, BMI, fitness (duration), and physical activity.

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