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Table 1 Patient characteristics

From: Initial ovarian sensitivity index predicts embryo quality and pregnancy potential in the first days of controlled ovarian stimulation

Variable Value a
Sample size (n) 363
Age (years) 36.1 ± 4.6 (19–45)
BMI (kg/m2) 25.9 ± 4.3 (18.8–38.9)
Infertility factor (n,%)
 None indicated/normal 33, 9.1%
 Anovulation 8, 2.2%
 Low response 80, 22.0%
 Advanced age 83, 22.9%
 Endometriosis 34, 9.4%
 PCOS 73, 20.1%
 Tubal factor 35, 9.6%
 Other 17, 4.7%
FSH (IU/L)
 Initial 303 ± 78 (75–450)
 Total 3104 ± 992 (75–6000)
Antral follicle count (n) 12.0 ± 8.3 (0–46)
Day 3–4 follicle count (n)
 < 6 mm 3.2 ± 3.9 (0–40)
 6 to 8 mm 5.1 ± 3.9 (0–22)
 > 8 mm 5.1 ± 4.2 (0–26)
OSI-modified (MOSI)
 Score 38.6 ± 28.5 (2.2–193.3)
 Ln transformed 3.4 ± 0.8 (0.8–5.3)
Ova captured (n) 12.7 ± 8.0 (1–63)
 MII ova (n) 10.6 ± 7.0 (0–39)
 MII/Ova captured (%) 82.7 ± 17.0 (0.0–29.0)
Ovarian sensitivity index (OSI)
 Score 4.7 ± 3.7 (0.2–22.7)
 Ln transformed 1.2 ± 0.9 (− 1.6–3.1)
Total embryos on Day 2 (n) 7.1 ± 5.3 (0–29)
 High-quality embryos (n) 2.6 ± 2.7 (0–15)
 High-quality embryos/Ova captured (%) 21.5 ± 19.3 (0–100)
Blastocyst (n) 2.5 ± 3.2 (0–16)
 Blastocyst /Ova captured (%) 16.1 ± 18.7 (0–100)
  1. aValues, unless indicated otherwise, are mean ± standard deviation (minimum-maximum)