Predictive value of age-specific FSH levels for IVF-ET outcome in women with normal ovarian function

Table 2 Baseline characteristics and IVF outcomes in the POA and control groups in women aged <33 years

Characteristics	<33 years old		t/z(χ ² )	P
	Control	POA
n	356	294
Age(y)^a	28.64 ± 2.49	28.92 ± 2.37	1.462	0.144
Infertility years(y)^a	3.84 ± 2.48	3.81 ± 2.34	−0.140	0.889
BMI(kg/m²)^a	21.30 ± 3.06	20.35 ± 2.27	−4.528	<0.001
FSH(IU/L)^a	6.46 ± 1.03	9.21 ± 1.00	34.362	<0.001
LH(IU/L)^b	3.81(2.94–4.89)	4. 78(3.62–5.82)	44.850	<0.001
E₂(ng/L)^b	38.00(25.90–51.00)	37.77(26.00–50.58)	0.039	0.844
FSH/LH^b	1.76(1.32–2.18)	1.95(1.57–2.50)	20.869	<0.001
AFC(n)^a	16.14 ± 5.82	14.58 ± 5.25	−3.554	<0.001
Total dose of Gn (IU)^a	1,874.20 ± 609.07	2,051.08 ± 612.17	3.639	<0.001
E₂ level on D_HCG (ng/L)^b	3,818.70 (2,413.24–4,800.00)	3,563.50 (2,222.75–4,800.00)	3.107	0.078
Number of retrieved oocytes(n)^a	14.86 ± 7.35	12.55 ± 6.22	−4.234	<0.001
Rate of POR(%)^c	1.42(5/353)	6.46(19/294)	11.585	0.001^d
Number of frozen embryos (n)^b	5.00(3.00–8.00)	5.00(3.00–8.00)	3.895	0.048
Number of available embryos (n)^b	7.00(5.00–10.00)	7.00(4.00–9.00)	3.761	0.052
Fertilization rate(%)^c	84.62(66.67–94.44)	85.71(71.43–100.00)	1.858	0.173
Cleavage rate(%)^c	100.00 (100.00–100.00)	100.00 (100.00–100.00)	0.221	0.638
Cancellation rate(%)^c	0.84(3/356)	2.72(8/294)	3.415	0.065^e
Pregnancy rate (%)^c	55.52(196/353)	54.55(156/286)	0.061	0.805

^aThe normally distributed data are presented as the mean ± SD, including age, infertility years, BMI, FSH, AFC, total dose of Gn, and number of retrieved oocytes. The t-test was performed to analyze statistical significance
^bThe non-normally distributed data are presented as the median (25–75th percentile). The non-parametric Mann–Whitney test was performed to calculate the Z-score
^cThe chi-square (χ ²) test was performed to analyze statistical significance
^dThe rate of POR = (the cycles of oocyte yields ≤ 3 + the cycles cancelled egg retrieval)/the total cycles
^eThe cancellation rate only included the cycles of cancelled egg retrieval

ISSN: 1477-7827