TABLE 1.
Demographic Characteristics of Pediatric MS Patients
| Characteristic | Overall (N = 490) |
|---|---|
| Age at time of first event, mean ± SD [minimum–maximum], y | 13.2 ± 3.87 [1.6–18.0] |
| Male: mean ± SD [minimum–maximum], y | 12.8 ± 4.16 [1.8–17.9] |
| Female: mean ± SD [minimum–maximum], y | 13.4 ± 3.70 [1.6–18.0] |
| Age <10 y at first event | 84 (17.1) |
| Age <11 y at first event | 107 (21.8) |
| Age <12 y at first event | 139 (28.4) |
| Sex | |
| Male | 166 (33.9) |
| Female | 324 (66.1) |
| Racea | |
| White | 303 (67.0) |
| Black/African American | 93 (20.6) |
| American Indian/Alaskan Native | 8 (1.8) |
| Asian | 17 (3.8) |
| Native Hawaiian or Pacific Islander | 1 (0.2) |
| Multiracial | 30 (6.6) |
| Ethnicityb | |
| Hispanic or Latino | 139 (30.2) |
| Not Hispanic or Latino | 321 (69.8) |
Data are presented as N (%) unless indicated otherwise. Patients with unknown race (n = 38) or ethnicity (n = 30) are not included in percentage calculations.
a
Racial distribution for age <18 years according to 2012 US Census estimates: 73% white; 15% black/African American; 1.6% Native American/Alaskan Native; 4.8% Asian; 0.3% Native Hawaiian or Pacific Islander; and 4.8% multiracial.26
b
Ethnic distribution according to the 2010 US Census: 16% Hispanic or Latino; 84% non-Hispanic or Latino.27