Table 1.
Patient characteristics
| Entire cohort at onset of QW interferon treatment (N = 92) |
At time of switch to BIW interferon and stable after switching (N = 23) |
At time of switch to BIW interferon and not stable after switching (N = 17) |
|
|---|---|---|---|
| Mean age (years) and age range | 51 (30–86) | 50 (30–75) | 48 (38–58) |
| Mean disease duration (years) and range | 16 (0.2–54) | 16 (1–36) | 14 (2–33) |
| Sex | |||
| Female | 21 (23%) | 4 (17%) | 4 (14%) |
| Male | 71 (77%) | 19 (83%) | 13 (76%) |
| Race/ethnicity | |||
| Caucasian | 68 (74%) | 19 (83%) | 12 (71%) |
| African American | 19 (21%) | 3 (13%) | 5 (29%) |
| Hispanic | 3 (3%) | 1 | 0 |
| Oriental | 1 | 0 | 0 |
| American Indian | 1 | 0 | 0 |
| Phase of disease | |||
| Relapsing–remitting | 30 | 6 | 7 |
| Secondary progressive | 62 | 17 | 10 |