Table I.
Characteristics of IVF treatment and outcome and levels of vitamin D in serum and follicular fluid
| Parameter | Mean ± SD/median (25–75th percentile) |
|---|---|
| COS duration [days] | 10.00 ±1.48 |
| Maximal value of E2 [pmol/ml] | 7328.31 ±2170.9 |
| E2 on triggering day [pmol/ml] | 7087.13 ±2342.82 |
| No. of perifollicular follicles | 8.75 ±3.75 |
| Retrieved oocytes | 7.87 ±2.60 |
| MII oocytes | 5.25 ±2.24 |
| 2pn | 3.00 (2.50–5.50) |
| Fragmentation rate | 79.16 (64.29–100) |
| Total No of embryos | 3.0 (2.5–5.5) |
| No. of grade 1 embryos | 0.5 (0–2.0) |
| No. of grade 2 embryos | 1.5 (0.5–3.0) |
| No. of grade 3 embryos | 0.5 (0–1.0) |
| Implantation rate | 16.67 (0–41.67) |
| Serum vitamin D [nmol/l] | 69.8 (35.1–82.9) |
| Follicular fluid vitamin D [nmol/l] | 51.2 (31.4–66.8) |
Results are presented as mean ± SD for normally distributed variables and median (25–75th percentile) for non-normally distributed variables. IVF – in vitro fertilization, COS – controlled ovarian stimulation, E2 – oestradiol, MII – metaphase II, SD – standard deviation.