Table 1 Baseline characteristics of all participants were stratified by infertility, weighted
From: Higher body roundness index (BRI) increases infertility among U.S. women aged 18–45 years
Characteristic | Overall, N = 51,123,046 (100%) | Non-infertility, N = 45,329,088 (89%) | Infertility, N = 5,793,958 (11%) | P Value |
|---|---|---|---|---|
No. of participants in the sample | 3,528 | 3,164 | 364 | - |
Age (%) | < 0.001 | |||
18–25 | 15,030,743 (29%) | 14,310,789 (32%) | 719,954 (12%) | |
26–34 | 16,139,528 (32%) | 14,397,104 (32%) | 1,742,425 (30%) | |
> 34 | 19,952,775 (39%) | 16,621,196 (37%) | 3,331,579 (58%) | |
Race (%) | 0.100 | |||
Non-Hispanic White | 28,635,786 (56%) | 25,017,130 (55%) | 3,618,655 (62%) | |
Other | 9,510,598 (19%) | 8,658,404 (19%) | 852,193 (15%) | |
Non-Hispanic Black | 6,845,835 (13%) | 6,139,901 (14%) | 705,934 (12%) | |
Mexican American | 6,130,828 (12%) | 5,513,652 (12%) | 617,176 (11%) | |
Married/live with partner (%) | < 0.001 | |||
No | 19,229,843 (40%) | 17,919,894 (43%) | 1,309,948 (23%) | |
Yes | 28,656,737 (60%) | 24,205,957 (57%) | 4,450,780 (77%) | |
Education level (%) | 0.588 | |||
Below high school | 5,493,446 (11%) | 4,875,470 (12%) | 617,976 (11%) | |
High School or above | 42,393,134 (89%) | 37,250,382 (88%) | 5,142,752 (89%) | |
PIR (%) | 0.108 | |||
Not Poor | 33,606,384 (70%) | 29,431,242 (70%) | 4,175,142 (75%) | |
poor | 14,072,815 (30%) | 12,671,795 (30%) | 1,401,020 (25%) | |
Smoking (%) | 0.012 | |||
Never | 35,406,036 (69%) | 31,857,251 (70%) | 3,548,786 (61%) | |
Former | 6,069,938 (12%) | 5,201,022 (11%) | 868,916 (15%) | |
Current | 9,647,072 (19%) | 8,270,815 (18%) | 1,376,256 (24%) | |
Drinking (%) | 0.061 | |||
former | 2,601,289 (5.3%) | 2,094,740 (4.8%) | 506,548 (9.0%) | |
heavy | 13,105,738 (26%) | 11,561,989 (26%) | 1,543,749 (28%) | |
mild | 12,825,776 (26%) | 11,359,023 (26%) | 1,466,753 (26%) | |
moderate | 13,559,212 (27%) | 12,079,207 (28%) | 1,480,005 (26%) | |
never | 7,429,995 (15%) | 6,817,834 (16%) | 612,161 (11%) | |
Hypertension (%) | < 0.001 | |||
No | 43,682,966 (85%) | 39,218,707 (87%) | 4,464,259 (77%) | |
Yes | 7,440,080 (15%) | 6,110,381 (13%) | 1,329,699 (23%) | |
Diabetes (%) | < 0.001 | |||
No | 46,014,179 (94%) | 41,112,084 (94%) | 4,902,095 (89%) | |
Yes | 2,984,448 (6.1%) | 2,401,930 (5.5%) | 582,519 (11%) | |
High cholesterol (%) | < 0.001 | |||
No | 45,007,588 (88%) | 40,305,200 (89%) | 4,702,388 (81%) | |
Yes | 6,115,458 (12%) | 5,023,888 (11%) | 1,091,570 (19%) | |
BRI (mean (SD)) | 5.38 (2.73) | 5.24 (2.65) | 6.43 (3.08) | < 0.001 |