Maternal demographics
| Demographic | Office visit n=103 (%) | Text messaging n=103 (%) |
| Age (years) | 28±5 | 28±6 |
| Race | ||
| Black/African-American | 73 (70.9) | 68 (66.0) |
| White | 25 (24.3) | 28 (27.2) |
| Asian | 4 (3.9) | 2 (1.9) |
| Other | 1 (1.0) | 5 (4.8) |
| Insurance | ||
| Private | 42 (40.8) | 44 (42.7) |
| Medicaid | 61 (59.2) | 59 (57.3) |
| Body mass index at first prenatal visit, median (IQR) | 31.0 (25.1–38.3) | 30.1 (24.3–33.8) |
| Nulliparous | 52 (50.5) | 61 (59.2) |
| Tobacco use | ||
| Prior to pregnancy | 12 (11.6) | 8 (7.8) |
| During pregnancy | 5 (4.8) | 5 (4.9) |
| Pregestational diabetes | 3 (2.9) | 5 (4.8) |
| Gestational diabetes | 8 (7.8) | 6 (5.8) |
| Chronic hypertension | ||
| Yes—no medication | 7 (6.0) | 9 (8.7) |
| Yes—on medication | 6 (5.8) | 5 (4.8) |
| Renal disease | 5 (4.8) | 5 (4.8) |
| Timing of diagnosis | ||
| Antepartum | 56 (54.4) | 45 (43.7) |
| Intrapartum | 31 (30.1) | 44 (42.7) |
| Postpartum | 16 (15.5) | 14 (13.6) |
| Gestational age at diagnosis, median (IQR) | 38 (36–39) | 38 (36–39) |
| Gestational age at delivery, median (IQR) | 38 (37–39) | 38 (37–39) |
| Disease severity | ||
| GHTN/PEC without SF | 68 (66.0) | 63 (61.2) |
| Superimposed PEC | 10 (9.7) | 14 (13.6) |
| PEC with SF | 22 (21.4) | 25 (24.3) |
| HELLP | 3 (2.9) | 0 |
| Eclampsia | 0 | 1 (1.0) |
Continuous: mean ±SD, categorical: n (%).
GHTN, gestational hypertension; HELLP, haemolysis, elevated liver enzymes, low platelets; PEC, pre-eclampsia; SF, severe features.