Table 1.
Demographic, past clinical and in vitro fertilization (IVF) treatment characteristics of the study participants.
| Variable | Total, n = 142 | Pregnant, n = 35 | Not Pregnant, n = 83 | p-Value | Unknown, n = 24 |
|---|---|---|---|---|---|
| Demographic variables | |||||
| Age (years) | 33.9 ± 4.9 | 32.9 ± 4.7 | 34.3 ± 4.9 | 0.18 | 33.9 ± 5.4 |
| Missing data = 3.5% | |||||
| BMI | |||||
| Underweight | 10 (7.3%) | 7 (20.0%) | 1 (1.3%) | <0.01 | 2 (8.7%) |
| Normal | 76 (55.5%) | 18 (51.4%) | 46 (58.2%) | 12 (52.2%) | |
| Overweight/Obese | 51 (37.2%) | 10 (28.6%) | 32 (40.5%) | 9 (39.1%) | |
| Missing data = 3.5% | |||||
| Location | |||||
| Nur-Sultan | 75 (52.8%) | 9 (25.7%) | 52 (62.6%) | <0.001 | 14 (58.3%) |
| Aktobe | 67 (47.2%) | 26 (74.3%) | 31 (37.4%) | 10 (41.7%) | |
| Missing data = 0% | |||||
| Past and current medical history of infertility | |||||
| Comorbidity | |||||
| Yes | 83 (58.4%) | 8 (22.9%) | 59 (71.1%) | <0.001 | 16 (66.7%) |
| No | 59 (41.6%) | 27 (77.1%) | 24 (28.9%) | 8 (33.3%) | |
| Missing data = 0% | |||||
| Infertility duration (years) | |||||
| Mean ± SD | 6.0 ± 3.5 | 6.4 ± 2.9 | 6.0 ± 3.9 | 0.57 | 5.5 ± 3.2 |
| Median (IQR) | 6 (3–8) | 7 (4.5–8) | 5 (3–8) | 5 (3–8.5) | |
| Missing data = 4.9% | |||||
| Number of previous IVF cycles |
|||||
| None | 106 (75.2%) | 30 (85.7%) | 56 (67.5%) | 0.05 | 20 (87.0%) |
| One | 25 (17.7%) | 2 (5.7%) | 20 (24.1%) | 3 (13.0%) | |
| 2 or more | 10 (7.1%) | 3 (8.6%) | 7 (8.4%) | 0 (0%) | |
| Missing data = 0.7% | |||||
| IVF treatment characteristics | |||||
| Number of oocytes retrieved | |||||
| Mean ± SD | 8.1 ± 7.2 | 8.3 ± 5.0 | 7.9 ± 8.0 | 0.11 | 8.4 ± 7.6 |
| Median (IQR) | 6 (3–11) | 9 (4–11) | 5 (2–10) | 8 (3–9) | |
| Missing data = 11.3% | |||||
| Number of embryos transferred | |||||
| Mean ± SD | 1.4 ± 1.1 | 1.8 ± 1.2 | 1.2 ± 1.1 | 0.01 | 1.5 ± 0.7 |
| Median (IQR) | 1 (1–2) | 2 (1–2) | 1 (1–2) | 2 (1–2) | |
| Missing data = 14.1% | |||||