Table 1 Patient demographic and treatment cycle characteristics at oocyte retrieval

PATIENT DEMOGRAPHICS

Patients undergoing oocyte retrieval for PGT-A (N)

581

Patients with at least one biopsied blastocyst (N)

387

Maternal age* [years (95% CI)]

33.4 (32.8–33.9)

≤ 29 [N (%)]

99 (25.6)

30 to 34 [N (%)]

107 (27.7)

35 to 39 [N (%)]

139 (36.0)

≥ 40 [N (%)]

41 (10.6)

Previous births [mean (95% CI)]

1.3 (1.1–1.5)

Previous miscarriages** [mean (95% CI)]

1.5 (1.1–1.8)

0 [n (%)]

222 (68.1)

1 to 2 [n (%)]

39 (12.0)

≥ 3 [n (%)]

65 (19.9)

Previous failed IVF attempts [mean (95% CI)]

2.8 (2.4–3.2)

0 [n (%)]

210 (54.3)

1 to 2 [n (%)]

96 (24.8)

≥ 3 [n (%)]

81 (20.9)

History of single gene disorder PGT-M [n (%)]

174 (45.0)

History of fetal aneuploid [n (%)]

14 (3.6)

LABORATORY FINDINGS

Oocytes collected per patient [n (95% CI)]

13.4 (12.4–14.4)

Blastocysts biopsied per patient [n (95% CI)]

4.1 (3.7–4.4)

Maturation rate [% (95% CI)]

75.2 (72.4–77.9)

Fertilization rate [% (95% CI)]

76.4 (73.6–79.2)

Blastulation rate [% (95% CI)]

61.6 (56.6–66.6)

Euploid rate [% (95% CI)]

60.6 (57.1–64.2)