Table 1.
Sample characteristics by parity.
| Nulliparous | Parous | Total | |
|---|---|---|---|
| n(%) | n(%) | ||
| Age in years | |||
| <25 | 21(8.8) | 8(2.5) | 29(5.1) |
| 25–29 | 72(30.3) | 41(12.7) | 113(19.9) |
| 30–34 | 90(37.8) | 136(42.0) | 229(40.4) |
| 35–39 | 51(21.4) | 114(35.2) | 167(29.5) |
| >40 | 4(1.7) | 25(7.7) | 29(5.1) |
| Trimester of pregnancy | |||
| First | 24(10.0) | 51(16.0) | 75(13.3) |
| Second | 69(28.6) | 108(34.0) | 178(31.6) |
| Third | 148(61.4) | 159(50.0) | 310(55.1) |
| Relationship status | |||
| Married | 174(71.9) | 278(85.8) | 457(80.0) |
| Cohabitating | 39(16.1) | 37(11.4) | 76(13.3) |
| In a relationship | 23(9.5) | 6(1.8) | 29(5.1) |
| Single | 6(2.5) | 3(0/9) | 9(1.6) |
| Country of residence | |||
| United States of America | 104(43.2) | 138(42.7) | 242(42.5) |
| Ireland | 89(36.9) | 142(44.0) | 235(41.3) |
| United Kingdom | 32(13.3) | 25(7.7) | 57(10.3) |
| Other | 16(6.6) | 18(5.6) | 35(6.2) |
| Ethnicity | |||
| White | 210(88.2) | 299(92.6) | 514(90.8) |
| Black | 6(2.5) | 3(0.9) | 9(1.6) |
| Asian | 5(2.1) | 3(0.9) | 8(1.4) |
| Hispanic | 8(3.4) | 5(1.5) | 13(2.3) |
| Other included mixed ethnicities | 9(3.8) | 13(4.0) | 22(3.9) |
| Education | |||
| Non-degree qualification | 53(21.9) | 65(20.1) | 118(20.8) |
| Undergraduate degree | 91(37.6) | 121(37.3) | 212(37.5) |
| Postgraduate degree | 98(40.5) | 138(42.6) | 236(41.7) |