Table 4

Cumulative risk of disability for the seven SNPs that predicted ΔEDSS

Number of 5-year disability measuresβ (95% CI)p ValueR2
≤2 risk genotypes*210.14 (0.07 to 0.22)0.327
3 risk genotypes39+0.12 (0.02 to 0.22)0.024
4 risk genotypes29+0.20 (0.09 to 0.31)6.80×10−4
5 risk genotypes26+0.28 (0.17 to 0.40)5.14×10−6
≥6 risk genotypes†10+0.48 (0.30 to 0.66)8.36×10−8
ptrend=1.53×10−9
  • p: adjusted for age, sex and study recruitment centre; ΔEDSS: annualised change in EDSS.

  • Disability results presented as geometric mean ΔEDSS (95% CI) for the reference group, and coefficient relative to the reference (β (95% CI)) for subsequent levels.

  • Results in bold denote statistically significant results (p<0.05).

  • *No participants carried zero risk genotypes, 5 participants carried one risk genotypes, and 16 carried two risk genotypes.

  • †No participants carried seven risk genotypes, while 10 participants carried six risk genotypes.

  • EDSS, Expanded Disability Status Scale; SNPs, single nucleotide polymorphisms.