Table 3.
Multivariate linear regression model analyses.
| Linear Regression Model, Systolic Blood Pressure, N=337* | ||||
| B** | S.E. | β*** | P value | |
| Previous pre-eclampsia | 2.75 | 1.33 | 0.109 | 0.040 |
| Mean prior systolic BP**** | 0.14 | 0.03 | 0.220 | 0.001 |
| Current age | 0.19 | 0.07 | 0.138 | 0.007 |
| Current BMI | 0.28 | 0.09 | 0.170 | 0.002 |
| Linear Regression Model, Diastolic Blood Pressure, N=337 | ||||
| Previous pre-eclampsia | 1.74 | 0.96 | 0.182 | 0.070 |
| Mean prior systolic BP | 0.08 | 0.03 | 0.179 | 0.001 |
| Current age | 0.12 | 0.05 | 0.129 | 0.013 |
| Current BMI | 0.20 | 0.06 | 0.170 | 0.002 |
| Participants in first quartile with shortest follow-up | ||||
| Linear Regression Model, Systolic Blood Pressure, N=69 | ||||
| Previous pre-eclampsia | 4.26 | 2.68 | 0.188 | 0.116 |
| Mean prior systolic BP | 0.20 | 0.09 | 0.273 | 0.038 |
| Current age | 0.233 | 0.21 | 1.093 | 0.278 |
| Current BMI | 0.16 | 0.17 | 0.115 | 0.362 |
| Remaining quartiles, same model, results given for previous pre-eclampsia only | ||||
| Second quartile of follow-up, N=89 | 2.45 | 2.52 | 0.106 | 0.335 |
| Third quartile, N=91 | 4.22 | 2.77 | 0.154 | 0.131 |
| Fourth quartile, N=89 | −1.81 | 2.83 | −0.070 | 0.523 |
| Linear Regression Model, Diastolic Blood Pressure, N=69 | ||||
| Previous pre-eclampsia | 3.35 | 1.67 | 0.217 | 0.049 |
| Mean prior diastolic BP*** | 0.26 | 0.09 | 0.319 | 0.007 |
| Current age | 0.35 | 0.13 | 0.271 | 0.012 |
| Current BMI | 0.09 | 0.10 | 0.102 | 0.360 |
| Remaining quartiles, same model, results given for previous pre-eclampsia only | ||||
| Second quartile of follow-up, N=89 | 1.83 | 1.97 | 0.102 | 0.356 |
| Third quartile, N=91 | 0.31 | 1.92 | 0.017 | 0.872 |
| Fourth quartile, N=89 | −1.02 | 1.95 | −0.058 | 0.601 |
| Cases excluded, Controls only | ||||
| Linear Regression Model, Systolic Blood Pressure, N=211 | ||||
| Mean prior systolic BP | 0.13 | 0.04 | 0.20 | 0.003 |
| Current age | 0.25 | 0.09 | 0.19 | 0.003 |
| Current BMI | 0.43 | 0.11 | 0.27 | 0.001 |
| Linear Regression Model, Diastolic Blood Pressure, N=211 | ||||
| Mean prior diastolic BP | 0.15 | 0.05 | 0.21 | 0.001 |
| Current age | 0.18 | 0.06 | 0.19 | 0.004 |
| Current BMI | 0.30 | 0.07 | 0.26 | 0.001 |
*
N= the number of participants with available covariates for a particular analysis
**
Unstandardized regression coefficient
***
Standardized regression coefficient
****
Mean systolic or diastolic blood pressure, one year pre-pregnancy through 20 weeks gestation