Table 2 Demographic Baseline Characteristics
Participant Characteristics | Control | Intervention | Â |
|---|---|---|---|
n = 60,269 | n = 60,352 | Standardized difference | |
n (%) | n (%) | ||
Age | |||
18–24 | 18,444 (30.6) | 18,341 (30.4) | 0.0013 |
25–34 | 34,792 (57.8) | 34,995 (58.0) | 0.0015 |
35 +  | 7,033 (11.7) | 7,016 (11.6) | 0.0004 |
Region a | |||
Midwest | 12,588 (20.9) | 12,662 (21.0) | 0.0007 |
Northeast | 9,422 (15.6) | 9,652 (16.0) | 0.0028 |
South | 24,741 (41.0) | 24,338 (40.4) | 0.0042 |
West | 13,601 (22.5) | 13,617 (22.6) | 0.0000 |
Median household income in zip code b | |||
 < $25,000 | 1,051 (2.5) | 1,089 (2.6) | 0.0013 |
$25,000—$49,999 | 13,535 (32.6) | 13,301 (32.1) | 0.0029 |
$50,000—$74,999 | 16,465 (39.6) | 16,316 (39.4) | 0.0018 |
$75,000—$99,999 | 6,896 (16.6) | 7,033 (17.0) | 0.0019 |
 > $100,000 | 3,587 (8.6) | 3,656 (8.8) | 0.0013 |
Proportion with Bachelor's degree in zip code c | |||
 < 20% | 11,375 (27.3) | 11,149 (26.9) | 0.0030 |
20%—< 30% | 10,730 (25.8) | 10,527 (25.4) | 0.0027 |
30%—< 50% | 12,849 (30.9) | 13,137 (31.7) | 0.0031 |
 ≥ 50% | 6,637 (16.0) | 6,628 (16.0) | 0.0003 |
Rural or urban county d | |||
Urban | 43,321 (78.5) | 43,097 (78.1) | 0.0030 |
Rural | 11,898 (21.5) | 12,084 (21.9) | 0.0020 |
Enrollment App | |||
Fertility | 11,922 (19.8) | 11,984 (19.9) | 0.0005 |
Pregnancy | 48,347 (80.2) | 48,368 (80.1) | 0.0005 |