Table 1 Demographic and clinical characteristics of the study cohort.

From: Identification of genetic variants associated with clinical features of sickle cell disease

Characteristic

N = 5201

Demographics

 Age at first encounter

1.5 (0.6, 7.2)

 Age at last encounter

17 (11, 22)

 Patient gender

 

  Female

238 (48%)

  Male

258 (52%)

 Patient ancestry

  Black or African American

369 (97%)

  Other

8 (2.1%)

  White

2 (0.5%)

  Declined to answer

1 (0.3%)

Medical history

 Asthma

197 (39%)

 Past or current inhaled corticosteroid use

135 (26%)

 Past or current hydroxyurea use

410 (80%)

 Past or current chronic transfusion

145 (28%)

 Acute chest syndrome rate, per year

0.09 (0.00, 0.24)

 Vaso-occlusive episode rate, per year

0.50 (0.15, 1.33)

 Pain episode rate, per year

0.52 (0.16, 1.36)

 Admissions, per year

1.14 (0.58, 2.11)

1Median (IQR); n (%)