Characteristics | Spring (n = 33) | Summer (n = 14) | Autumn (n = 22) | Winter (n = 17) | P |
---|---|---|---|---|---|
Fertilization methoda | |||||
IVF (n) | 21 | 10 | 9 | 9 | NS |
Other (n)c | 12 | 4 | 13 | 8 | |
Age (year)b | 33(31–33) | 32.5(31.3–34) | 32(30–33) | 32(31–33) | NS |
Gn dose (IU), totalb | 2925(2475–3750) | 2587.5(2300–3993.8) | 3262.5(2700–4293.8) | 3600(2475–4500) | NS |
Stimulation period (day)b | 11(10–12) | 11(11–12) | 11.5(11–12) | 11(10–12) | NS |
LH baselineb | 2(1.3–3.1) | 1.6(1.0–2.9) | 1.3(0.9–3.0) | 1.6(0.9–2.1) | NS |
LH at triggerb | 2(1.3–3.1) | 2.0(0.9–3.1) | 2.1(1.7–2.9) | 1.6(1.2–1.9) | NS |
E2 baselineb, | 58(44–94) | 57(44.25) | 52(44–75.3) | 48(44–54) | NS |
E2 at triggerb, | 11,242(7133–19,277) | 13,713.5(8377–18,862.3) | 12,054(7530–23,103) | 9275(5772–12,038) | NS |
Day3 FSHb, d | 6.8(6.1–8.1) | 7.5(6.8–8.2) | 7.4(6.5–8.8) | 7.4(6.3–8.4) | NS |
Oocyte retrieved (n)b | 9(8–14) | 12(9–15.8) | 9(6.3–11) | 13(8–16) | NS |
Fertilized oocyte (n)b | 6(4–8) | 5.5(3.3–9.5) | 7(4–7) | 6(5–9) | NS |
Available embryos (n)b, e | 2(2–4) | 3(1.25–5) | 2(2–3) | 4(2–4) | NS |
Transferred embryof gradeb | 4(4–4) | 4(4–4) | 4(4–4) | 4(4–4) | NS |