[Retracted] Efficacy of Letrozole Combined with Urinary Gonadotropin for Ovulation Induction in Endocrine Abnormal Infertility Patients: A Retrospective Single-Center, Case-Control Study

Table 1

Comparison of general data (, ()).

Group	Average age (years)	Body mass index (kg/m^2)	Duration of infertility (years)	Disease type
				Amenorrhea lactation syndrome	Hypoestrogenemia	Kallmann syndrome
Comparison group (80)				40	23	17
Observation group (80)				42	22	16
	0.130	0.231	0.131	0.100	0.031	0.038
	0.897	0.818	0.913	0.752	0.860	0.845