Comparing prediction of ongoing pregnancy and live birth outcomes in patients with advanced and younger maternal age patients using KIDScore™ day 5: a large-cohort retrospective study with single vitrified-warmed blastocyst transfer

Table 4 FHB+ rates (%) in each KS-D5 group stratified by SART maternal age

	1.0–3.6*	3.7–6.0*	6.1–8.0*	8.1–9.9*	No. of cycles	P value for trend test
< 35	26.5	38.2	41.0	50.0	295	< 0.05
35–37	20.2	31.8	39.4	52.2	405	< 0.05
38–40	13.1	21.2	33.3	38.5	613	< 0.05
41–42	8.6	14.6	23.1	36.4	490	< 0.05
≥ 43	3.1	6.6	12.9	27.7	682	< 0.05
Total	10.7	17.8	28.6	41.0	2482	< 0.05

FHB+ Fetal heart beat positive, AUC Area under the curve for prediction of FHB+, KS-D5 KIDScore Day5
* An asterisk indicates that the FHB+ rates significantly decreased when maternal age increased for each column according to the Cochran-Armitage trend test (P < 0.05)

ISSN: 1477-7827