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Table 4 Adjusted odds ratio of obstetric outcomes across systolic blood pressure subgroups

From: Pre-pregnancy blood pressure and pregnancy outcomes: a nationwide population-based study

 

<  90

(n = 3414)

90 – 99

(n = 40,468)

100 – 109

(n = 109,985)

110 – 119

(n = 139,082)

120 – 129

(n = 64,812)

130 – 139

(n = 17,544)

Preeclampsia

0.383 (0.249,0.590)

0.456 (0.404,0.515)

0.625 (0.582,0.672)

reference

1.504 (1.411,1.602)

2.734 (2.523,2.961)

Placenta abruptio

0.911 (0.513,1.617)

1.025 (0.857,1.225)

1.086 (0.957,1.232)

reference

1.107 (0.956,1.282)

1.039 (0.809,1.334)

Stillbirth

2.038 (0.491,8.464)

1.606 (0.915,2.819)

0.732 (0.433,1.239)

reference

0.973 (0.554,1.707)

1.671 (0.800,3.492)

 

(n = 2983)

(n = 35,623)

(n = 97,608)

(n = 123,852)

(n = 57,911)

(n = 15,709)

Preterm birth

0.912 (0.708,1.173)

0.865 (0.796,0.940)

0.973 (0.920,1.030)

reference

1.116 (1.048,1.189)

1.322 (1.200,1.457)

LBW

0.902 (0.730,1.115)

0.865 (0.807,0.927)

0.936 (0.892,0.982)

reference

1.135 (1.076,1.197)

1.307 (1.201,1.421)

Composite morbiditya

0.795 (0.668,0.946)

0.802 (0.759,0.847)

0.884 (0.852,0.918)

reference

1.199 (1.152,1.248)

1.681 (1.586,1.783)

  1. Data are presented as odds ratio and 95% confidential intervals of each obstetric outcomes across blood pressure subgroups
  2. Adjusted for.
  3. Abbreviations: LBW Low birth weight
  4. aIncludes any of the following: preeclampsia, placenta abruptio, stillbirth, preterm birth, low birth weight