Observed (MS obs) and expected (MS exp) numbers of people in the HIV cohort who had a subsequent record of multiple sclerosis (MS), shown by age at entry to the HIV cohort and by time interval from the first HIV record to the first MS record; rate ratios and 95% CIs
| Age at entry to HIV cohort (years) | Time interval (years) | MS obs | MS exp | RR (95% CI) |
|---|---|---|---|---|
| All | All | 7 | 18.3 | 0.38 (0.15 to 0.79) |
| All | 1+ | 4 | 15.8 | 0.25 (0.07 to 0.65) |
| All | 5+ | 1 | 6.7 | 0.15 (<0.01 to 0.83) |
| <45 | All | 3 | 13.9 | 0.22 (0.04 to 0.63) |