| Table 1. Descriptive statistics for maternal age; number of previous IVF cycles; duration of infertility; gestational week at birth; birth weight of the infants; 5-minute APGAR score; and serum levels of folate, vitamin B12, and homocysteine | ||
| Variables | Median | Minimum-Maximum |
| Maternal Age (years) | 30 | 21-41 |
| Number of previous IVF cycles | 2 | 1-6 |
| Duration of infertility (months) | 24 | 12-72 |
| Gestational week at birth | 37 | 34-39 |
| Birth weight of the infants (g) | 3030 | 2100-3780 |
| Fifth minute APGAR Score | 10 | 7-10 |
| Serum folate levels (nmol/L) | 16.3 | 5.7-27 |
| Serum vitamin B12 levels (ng/L) | 289 | 129-465 |
| Serum homocysteine levels (µmol/L) | 8.1 | 3.4-12.4 |