Table 2.
Hypertension Description by trajectory group
| Total N = 1538 |
Group 1: Normal N = 767 |
Group 2: Low Normal N = 384 |
Group 3: High Normal N = 316 |
Group 4: Abnormal N = 71 |
P value | |
|---|---|---|---|---|---|---|
| Number of measures | 5 (4–8) | 5 (4–7) | 5 (4–7) | 6 (4–10) | 7 (4–16) | < 0.0001 |
| Any hypertension (%) | 337 (22) | 93 (12) | 14 (4) | 161 (51) | 69 (97) | < 0.0001 |
| Hypertension type* (%) | ||||||
| Chronic | 42 (13) | 15 (16) | 2 (14) | 23 (14) | 2 (3) | 0.001 |
| Gestational | 284 (84) | 70 (75) | 11 (79) | 136 (85) | 67 (97) | |
| Unknown | 11 (3) | 8 (9) | 3 (2) | 2 (1) | 0 | |
| Diagnostic Criteria (%) | < 0.0001 | |||||
| Both SBP ≥140 mmHg and DBP ≥90 mmHg | 40 (12) | 5 (5) | 0 | 12 (7) | 23 (33) | |
| Only SBP ≥140 mmHg | 133 (39) | 46 (50) | 7 (50) | 66 (41) | 14 (20) | |
| Only DBP ≥90 mmHg | 164 (49) | 42 (45) | 7 (50) | 83 (52) | 32 (47) | |
| Severity (%) | 0.578 | |||||
|
Non-severe (SBP 140–159 or DBP 90-109 mmHg) |
324 (96) | 89 (96) | 13 (93) | 157 (98) | 65 (94) | |
|
Severe (SBP ≥ 160 or DBP ≥110 mmHg) |
253 (4) | 4 (4) | 1 (7) | 4 (2) | 4 (6) | |
* Chronic hypertension incidence estimated among women who were assessed at < 20 weeks gestation. Gestational hypertension incidence will be estimated among women previously assessed as normotensive at < 20 weeks. Unknown = assessed for the first time at 20 weeks