| Variables Effect | Rubella status | ORbrut | CI95% | p-value | |
| Rubella + n = 12 (%) | Rubella- n = 277 (%) | ||||
| Age | 1.03 | [0.32 – 3.34] | 0.95 | ||
| 14 - 19 | 1 (8.34) | 24 (8.66) | |||
| 20 - 24 | 5 (41.66) | 64 (23.11) | |||
| 25 - 29 | 3 (25) | 69 (24.91) | |||
| 30 - 34 | 2 (16.66) | 97 (35.01) | |||
| 35 - 44 | 1 (8.34) | 23 (8.31) | |||
| Immune status | |||||
| Immunized | 55 (19.04) | 0.86 | [0.44 - 1.68] | 0.66 | |
| No Immunized | 234 (80.96) | ||||
| Parity | 1.4 [0.84 - 1.99] | ||||
| Nulliparous | 2 (1.,66) | 77 (27.79) | |||
| Pauciparous | 7 (58.34) | 108 (38.98) | |||
| Multiparous | 3 (25) | 92 (33.23) | |||