Table 2 Infertility characteristics and pregnancy outcomes in the Mayo Primary Infertility Cohort
From: Fertility trends and comparisons in a historical cohort of US women with primary infertility
Characteristic | Total (N = 1001) |
|---|---|
Length of infertility (months) | |
 No. available | 960 |
 Median (IQR) | 16 (12, 24) |
Type of Infertility†| |
 Ovulatory Dysfunction | 316 (31.6%) |
 Amenorrhea | 22 |
 Oligo-ovulation | 239 |
 PCOS | 41 |
 Hypothalamic hypogonadism | 10 |
 Diminished ovarian reserve | 9 |
 Male factor | 246 (24.6%) |
 Absence of a male partner | 14 |
 Abnormal semen parameters | 231 |
 Tubal factor | 62 (6.2%) |
 Uterine | 29 (2.9%) |
 Endometriosis | 104 (10.4%) |
 Unexplained | 374 (37.4%) |
Fertility medications used prior to documented pregnancy‡ | |
 Clomiphene | |
  No | 413 (41.3%) |
  < 1 year use | 529 (52.8%) |
  > 1 year use | 59 (5.9%) |
 Gonadotropin | |
  No | 792 (79.1%) |
  < 1 year use | 201 (20.1%) |
  > 1 year use | 8 (0.8%) |
 Letrozole | 0 (0%) |
 IVF | 168 (16.8%) |
Ever pregnant | |
 No | 297 (29.7%) |
 Yes, with fertility medications to achieve first pregnancy | 422 (42.2%) |
 Yes, without fertility medications to achieve first pregnancy | 282 (28.2%) |