[Retracted] The Low Endometrial Expression of Long Non-Coding RNA NORAD Is Associated with Recurrent Pregnancy Losses and Unexplained Infertility

Table 2

Demographics and clinical characteristics of women with UIF, women with RPL, and fertile women.

Characteristics	UIF (n = 32)	RPL (n = 48)	Normal fertility (n = 62)
Age (year)	30.56 ± 4.83	29.06 ± 4.17	29.45 ± 4.45
BMI	23.72 ± 3.03	23.51 ± 3.11	22.68 ± 2.87
History of taking oral contraceptives (n(%))	10 (31.25%)	18 (37.50%)	15 (24.19%)
History of algomenorrhea (n(%))	15 (46.88%)	22 (45.83%)	23 (37.10%)
History of family history (n(%))	2 (6.25%)	2 (4.15%)	2 (3.22%)
FSH (mIU/ml)	6.29 ± 2.07	6.62 ± 2.11	4.40 ± 1.30
LH (mIU/ml)	7.79 ± 2.33	8.37 ± 2.50	5.80 ± 2.05
T (nmol/L)	1.74 ± 0.30	1.80 ± 0.32	1.45 ± 0.28
PRL (mIU/L)	493.81 ± 150.03	501.73 ± 149.69	316.47 ± 120.03
E2 (pmol/L)	115.47 ± 38.12	120.72 ± 41.55	81.63 ± 29.04
P (nmol/L)	1.05 ± 0.41	0.95 ± 0.30	2.53 ± 0.80

BMI, body mass index; FSH, follicle stimulating hormone; E2, estradiol; P, progesterone; LH, luteinizing hormone; T, testosterone; PRL, prolactin; compared to normal fertility, analyzed by independent Student’s t-test.