Table 1

New Zealand multiple sclerosis (MS) cohort characteristics

MS cohort characteristicsN
Total2909 (100.0%)
Sex
 Female2184 (75.1%)
 Male725 (24.9%)
Disease type
 Relapsing onset2386 (82.0%)
 Progressive onset459 (15.8%)
 Unknown64 (2.2%)
Age at 2006 study census (years)
 1–2011 (0.4%)
 21–30157 (5.4%)
 31–40481 (16.5%)
 41–50782 (26.9%)
 51–60839 (28.8%)
 61–70416 (14.3%)
 71–80196 (6.7%)
 81–9026 (0.9%)
 91–951 (0.0%)
Age at onset (years)
 0–20251 (8.6%)
 21–30876 (30.1%)
 31–40937 (32.2%)
 41–79803 (27.6%)
 Unknown42 (1.4%)
Disease duration at 2006 study census (years)
 0–101197 (41.1%)
 11–20830 (28.5%)
 21–30500 (17.2%)
 31–40241 (8.3%)
 41–5077 (2.6%)
 51–6522 (0.8%)
 Unknown42 (1.4%)
Period of symptom onset
 1941–1966130 (4.5%)
 1967–1976292 (10.0%)
 1977–1986541 (18.6%)
 1987–1996933 (32.1%)
 1997–2006971 (33.4%)
 Unknown42 (1.4%)