Characteristics of the four patient groups
| N (%) | Relapse onset | Age at onset of MS | Age at first child | No of children | EDSS 6 reached | Time to EDSS 6 | |
| n (%) | Mean (SD; min to max) | Mean (SD; min to max) | Mean (range) | n (%) | Median (IQR) | ||
| (1) No children | 80 (24) | 74 (93) | 28.2 (9.7; 13 to 58) | – | – | 42 (52) | 8.0 (3.75 to 15.0) |
| (2) Children only before onset of MS | 170 (52) | 143 (84) | 37.8 (8.6; 21 to 68) | 25.1 (4.4; 16 to 40) | 1.8 (1 to 4) | 100 (59) | 10.0 (6.0 to 14.0) |
| (3) Children only after onset of MS | 61 (18) | 60 (98) | 22.2 (4.4; 9 to 34) | 28.0 (4.8; 19 to 43) | 1.6 (1 to 4) | 31 (51) | 21.0 (14.0 to 27.0) |
| (4) Children before and after onset of MS | 19 (6) | 18 (95) | 28.2 (3.5; 22 to 35) | 25.3 (4.0; 19 to 31) | 2.8 (2 to 5) | 7 (37) | 21 (12.0 to 28.0) |