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Table 1 Clinical characteristics and serum AMH changes in the three groups

From: The impact of endometrioma and laparoscopic cystectomy on ovarian reserve and the exploration of related factors assessed by serum anti-Mullerian hormone: a prospective cohort study

  Endometrioma group (n = 40) Tubal factor infertility group (n = 36) Other benign ovarian cyst group (n = 22) P
Age (y) 30.38 ± 5.13 30.53 ± 4.55 29.95 ± 3.92 0.89
BMI(kg/m2) 20.44 ± 2.55 21.19 ± 2.58 20.19 ± 2.58 0.31
Gravidity 0.90 ± 0.18 1.00 ± 0.22 0.91 ± 0.35 0.64
Cyst size (cm) 7.70 ± 3.66   6.35 ± 2.88 0.15
Bilaterality (%) 16 (40)   4 (18) 0.08
Duration of operative procedure (min) 88.38 ± 45.27 50.50 ± 31.84 67.95 ± 32.32 <0.001
Blood loss (ml) 65.00 ± 44.89 30.56 ± 21.80 28.64 ± 13.20 <0.001
serum AMH (ng/ml)
Preoperative 1.53 ± 1.37a 2.82 ± 1.74c 2.20 ± 1.23b 0.001
Postoperative 0.69 ± 0.89a 2.80 ± 1.57c 1.48 ± 0.86b  
Rate of decline 0.62 ± 0.35 0.02 ± 0.15 0.32 ± 0.30 <0.001
  1. Note: 1). The cyst diameter refers to the average value of the maximum diameter line over two perpendicular planes of the ovarian cyst when the lesion is unilateral and refers to the sum of the diameters of the two cysts on both sides when the lesions are bilateral. 2). AMH decline rate = (preoperative AMH level-postoperative AMH level)/preoperative AMH level. 3). For the paired rank-sum test of a and b, both P < 0.001. 4). For the paired rank-sum test of c, P = 0.48.