TABLE 1.
Participant characateristics by male BMI (n=735) and female BMI (n=721).
| Male BMI (kg/m2) (n = 735) | Female BMI (kg/m2) (n = 721) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Characteristic | ≤24.9, n = 224a (30.3%) | 25–29.9, n = 334 (45.4%) | 30–34.9, n = 122 (16.6%) | ≥35, n = 55 (7.5%) | P value | <18.5, n = 32 (4.4%) | 18.5–24.9, n = 407 (56.5%) | 25–29.9, n = 147 (20.4%) | 30–34.9, n = 72 (10.0%) | ≥35, n = 63 (8.7%) | P value |
| Demographics/reproductive history | |||||||||||
| Male age (y) | 33.9 ± 6.0 | 34.8 ± 5.8 | 34.2 ± 5.2 | 34.7 ± 5.7 | .24 | 32.2 ± 5.9 | 34.4 ± 5.6 | 34.0 ± 6.5 | 35.4 ± 5.2 | 35.4 ± 5.7 | .05 |
| Female age (y) | 32.1 ± 5.0 | 32.5 ± 4.8 | 32.6 ± 4.7 | 32.6 ± 4.3 | .65 | 30.4 ± 4.8 | 32.3 ± 4.8 | 32.2 ± 4.7 | 33.2 ± 4.0 | 33.1 ± 4.8 | .05 |
| Female BMI (kg/m2) | 23.4 ± 4.2 | 24.6 ± 5.5 | 27.1 ± 6.0 | 31.5 ± 7.8 | < .001 | 26.0 ± 4.6 | 26.4 ± 3.7 | 27.8 ± 4.6 | 30.5 ± 6.1 | 31.3 ± 6.0 | < .001 |
| Prior ART, n (%) | 45 (20.1) | 52 (15.6) | 21 (17.2) | 8(14.6) | .53 | 5(15.6) | 69(17.0) | 23 (15.7) | 16 (22.2) | 8(12.7) | .65 |
| Parity, n (%) | 48 (21.5) | 91 (27.3) | 26(21.3) | 20 (36.4) | .07 | 3 (9.4) | 109 (26.8) | 32 (21.8) | 19 (26.4) | 18(28.6) | .19 |
| Reason for ART selectionb, n (%) | |||||||||||
| Male factor (n = 388, 52.8%) | 119(53.1) | 169 (50.6) | 68 (55.7) | 32 (58.2) | .63 | ||||||
| Endometriosis (n = 129, 17.9%) | 8 (25.0) | 76(18.7) | 27 (18.4) | 14(19.4) | 4 (6.4) | .13 | |||||
| Ovulation disorders (n = 109, 15.1%) | 1 (3.1) | 46(11.3) | 18 (12.2) | 23 (31.9) | 21 (33.3) | < .001 | |||||
| Diminished ovarian reserve (n = 87, 12.1%) | 5(15.6) | 52 (12.8) | 15 (10.2) | 10 (13.9) | 5 (7.9) | .68 | |||||
| Tubal disease (n = 79, 11.0%) | 1 (3.1) | 35 (8.6) | 20 (13.6) | 10 (13.9) | 13 (20.6) | .02 | |||||
| Uterine (n = 14, 1.9%) | 1 (3.1) | 6(1.5) | 3 (2.0) | 2 (2.8) | 2(3.2) | .83 | |||||
| Idiopathic/unexplained (n = 75, 10.4%) | 2 (6.3) | 56(13.8) | 11 (7.5) | 3 (4.2) | 3 (4.8) | .02 | |||||
| Otherc (n = 39, 5.4%) | 6 (18.8) | 22 (5.4) | 6(4.1) | 0 | 5 (8.7) | .002 | |||||
Note: Analyses conducted using analysis of variance and exact χ2 tests. Values reported as mean±SD unless indicated otherwise. There were 721 couples for whom we have both male and female BMI information.
a
Includes one mn with BMI <18.5 kg/m2.
b
Couples can have more than one infertility diagnosis. Three couples are missing infertility diagnosis.
c
Includes advanced maternal age, preimplantation genetic diagnosis, and other comorbidities, such as breast cancer.