Table 3.
Weighted distributions of blood pressure-related variables by duration of oral contraceptive use
| Characteristics | Overall |
Duration of oral contraceptive use |
p for trend | |||
|---|---|---|---|---|---|---|
| Never (n = 2844) | <0– < 12 mo (n = 304) | 12–24 mo (n = 132) | >24 mo (n = 76) | |||
|
Blood pressure (mm Hg), mean (95% CI)* |
|
|
|
|
|
|
| Systolic |
111.7 (110.7–112.6) |
111.4 (110.4–112.4) |
111.1 (109.2–112.9) |
114.8 (111.0–118.7) |
117.2 (113.4–121.0) |
<0.001 |
| Diastolic |
74.2 (73.6–74.8) |
74.0 (73.3–74.6) |
74.2 (72.9–75.4) |
76.9 (74.5–79.4) |
77.8 (75.1–80.5) |
<0.001 |
|
Prevalence,% |
|
|
|
|
|
|
| Hypertensive |
14.7 |
14.3 |
13.9 |
21.3 |
22.8 |
0.006 |
| Prehypertensive |
21.3 |
21.1 |
21.0 |
19.2 |
34.3 |
0.017 |
| Prehypertensive or Hypertensive | 36.0 | 35.4 | 34.9 | 40.5 | 57.2 | <0.001 |
*Excludes participants who reported being currently treated for hypertension.