Table 1.
Characteristics of Women Who Delivered Live Births by Assisted Reproductive Technology Status, Massachusetts and Michigan (N = 384,390)
| ART user% (n) N = 6675 | Nonuser% (n) N = 377,715 | p-valuea | |
|---|---|---|---|
| Mean age (years) | 35.4 (SD = 5.0) | 28.1 (SD = 6.1) | <0.001 |
| Education (years) | |||
| High school or less | 14.7 (979) | 55.0 (206,767) | <0.001 |
| More than high school | 85.3 (5675) | 45.0 (169,098) | |
| Race/ethnicity | |||
| Non-Hispanic White | 86.6 (5770) | 72.3 (272,785) | <0.001 |
| Other | 13.4 (892) | 27.7 (104,609) | |
| Prenatal care | |||
| First trimester | 89.2 (5841) | 78.2 (286,128) | <0.001 |
| Second trimester or later | 10.8 (705) | 21.8 (79,851) | |
| Parity | |||
| 0 | 54.0 (3580) | 42.4 (159,442) | <0.001 |
| 1 or more | 46.0 (3052) | 57.6 (216,817) |
a
Statistical significance by ART status determined using t-test for maternal age and chi-square test for categorical variables (p < 0.05).
ART, assisted reproductive technology; SD, standard deviation.