1.

患者基础情况比较

Baseline characteristics of the patients

Index	No addition	Early addition	Middle and late addition	P
No. of cycles	371	139	172	-
Age (year)	39.66±2.96	39.58±3.25	39.22±2.70	0.263
Years of infertility	5.09±4.58	5.55±4.74	4.50±3.83	0.110
BMI (kg/m2)	22.23±2.71	22.06±2.46	21.87±2.72	0.344
Type of infertility
Primary infertility	22.1% (82/371)	23.7% (33/139)	18.6% (32/172)	0.689
Secondary infertility	77.9% (289/371)	76.3% (106/139)	81.4% (140/172)	0.689
BasalFSH (U/L)	10.30±4.54	10.75±3.81	10.10±4.03	0.402
BasalLH (U/L)	5.05±3.99	4.86±2.98	4.75±2.36	0.623
BasalE2 (pg/mL)	42.03±20.83	40.27±25.69	41.18±25.76	0.746
BasalP (ng/mL)	0.42±0.34	0.49±0.45	0.47±0.58	0.358
Antral follicle count	4.93±2.34	5.10±2.49	5.15±2.31	0.588
AMH (ng/mL)	0.76±0.67	0.94±0.74	0.70±0.41	0.549