Table 1.
Demographics for short interpregnancy interval participants and controls
| Characteristic | SIPI (n=26) n(%) |
Controls (n=52) n(%) |
Total (n=78) n(%) |
|---|---|---|---|
| Ethnicity | |||
| European | 21 (81) | 42 (81) | 63 (81) |
| Asian | 1 (4) | 1 (2) | 2 (3) |
| Mixed | 0 (0) | 0 (0) | 0 (0) |
| Unknown | 4 (15) | 8 (15) | 12 (15) |
| Marital status | |||
| Single | 0 (0) | 3 (6) | 3 (4) |
| Married/living with/partnered | 26 (100) | 49 (94) | 75 (96) |
| Highest education level | |||
| Completed high school | 25 (96) | 32 (61) | 57 (73) |
| Some post-secondary | 24 (92) | 11 (21) | 35 (45) |
| Income | |||
| <$20, 000 | 4 (15) | 0 (0) | 4 (5) |
| $20, 000 – $40, 000 | 4 (15) | 7 (13) | 11 (14) |
| $41, 000 – $60, 000 | 5 (20) | 4 (8) | 9 (12) |
| $61, 000 – $80, 000 | 4 (15) | 13 (25) | 17 (22) |
| $81, 000 – $100, 000 | 6 (23) | 6 (12) | 12 (15) |
| >$100, 000 | 3 (12) | 11 (21) | 14 (18) |
| Psychiatric history | |||
| Major depressive disorder | 18 (69) | 43 (83) | 61 (78) |
| Bipolar disorder | 8 (31) | 8 (15) | 16 (21) |
| Taking psychotropic medication2 | 2 (8) | 4 (8) | 6 (12) |
| Number of Children Prior to Index Pregnancy | |||
| 0 | 0 (0) | 36 (70) | 36 (46) |
| 1 | 25 (96) | 13 (25) | 38 (49) |
| 2 | 0 (0) | 2 (4) | 2 (3) |
| 3 | 1 (4) | 1 (2) | 2 (3) |
2
Psychotropic medication that participants were taking, that could interfere with folate metabolism, include citalopram, epival, lorazepam, paroxetine, sertraline, topamax (Lambie and Johnson 1985; Linnebank et al. 2011)