Table 2. Characteristics of ovarian insufficiency after endometriotic cystectomy.

	Endometriotic Cystectomy			P value
	Hemilateral	Bilateral	Multiple (Bil)
Number	16	27	11
Age at the time of surgery (years old)	27.1 (±5.5)	28.9 (±5.3)	30.7 (±3.6)	P = 0.14
Period of onset (years)	6.3 (±4.3)	6.3 (±3.7)	3.6 (±2.5)	P = 0.11
Procedure L	8	14	5	P = 0.93
Procedure LS	8	13	6

Values are expressed mean ±SD.

EMC = endometriotic cyst Bil = Bilateral endometriotic cyst.

L = laparotomy, LS = laparoscopic surgery.

Qualitative data were expressed as numbers and compared using the chi-squared test or Kruskal-Wallis test. (P<0.05).