Blood pressure medication use and postpartum hospital readmission among preeclampsia patients

Figures & data

Table 1. Comparisons of Sample Characteristics to Readmission.

Variable	No readmission M (SD) or # (%) (n = 396)	Yes readmission M (SD) or # (%) (n = 44)	p value
Age (years) [mean]	30.2 (7.00)	33.6 (6.31)	0.003
Race/ethnicity White Hispanic Black Other	25 (6.3) 250 (63.1) 93 (23.5) 28 (7.1)	3 (6.8) 17 (38.6) 22 (50.0) 2 (4.5)	0.002
Body mass index (kg/m^2) [mean]	34.3 (7.18)	33.3 (5.94)	0.40
Gravida [mean]	2.6 (1.72)	2.9 (1.86)	0.32
Parity [mean]	1.1 (1.30)	1.3 (1.56)	0.69
Diabetes (yes)	15 (3.8)	1 (2.3)	1.00
Gestational diabetes (yes)	47 (11.9)	4 (9.1)	0.59
Preeclampsia history (yes)	51 (12.9)	6 (13.6)	0.89
Preeclampsia severe features (yes)	268 (67.7)	33 (75.0)	0.32
Systolic blood pressure [mean]	125.8 (11.74)	127.8 (9.47)	0.26
Diastolic blood pressure [mean]	76.3 (9.12)	78.1 (7.65)	0.21
Systolic blood pressure ≥130	155 (39.1)	21 (47.7)	0.27
Diastolic blood pressure ≥80	171 (43.2)	24 (54.5)	0.15

Note: M=mean, SD=standard deviation. The skewed variable of parity was analyzed with the Mann–Whitney test. Due to expected cell size < 5, race/ethnicity and diabetes were analyzed with the Fisher’s exact test.

Table 2. Multivariate Logistic Regression Analyses for Readmission with a Predictor Variable of Use or Nonuse of Blood Pressure Medication.

Variable	Model 1 OR (95% CI) (n = 440)	p value	Model 2 OR (95% CI) (n = 440)	p value
Blood pressure medication No Yes	1.00 0.79 (0.39, 1.63)	0.53	1.00 0.73 (0.33, 1.63)	0.45
Age (years)	1.08 (1.02, 1.13)	0.01	1.08 (1.02, 1.13)	0.01
Race/ethnicity White Hispanic Black Other	1.00 0.52 (0.14, 1.94) 1.78 (0.49, 6.53) 0.52 (0.08, 3.43)	0.33 0.39 0.50	1.00 0.52 (0.14, 1.95) 1.77 (0.48, 6.51) 0.54 (0.08, 3.58)	0.33 0.39 0.52
Preeclampsia severe features (yes)	—	—	1.21 (0.53, 2.77)	0.65

Note: OR=odds ratio, CI=confidence interval.

Table 3. Multivariate Logistic Regression Analysis for Readmission with a Predictor Variable of Low or High Dose of Blood Pressure Medication.

Variable	Model 1 OR (95% CI) (n = 299)	p value	Model 2 OR (95% CI) (n = 299)	p value
Blood pressure medication High dose Low dose	1.00 2.29 (1.00, 5.25)	0.050	1.00 2.30 (0.99, 5.36)	0.054
Age (years)	1.10 (1.03, 1.17)	0.01	1.10 (1.03, 1.17)	0.01
Race/ethnicity White Hispanic Black Other	1.00 0.53 (0.11, 2.71) 2.15 (0.44, 10.54) 0.39 (0.03, 5.01)	0.45 0.35 0.47	1.00 0.54 (0.11, 2.71) 2.15 (0.44, 10.56) 0.40 (0.03, 5.24)	0.45 0.35 0.48
Preeclampsia severe features (yes)	—	—	1.02 (0.31, 3.10)	0.97

Note: OR=odds ratio, CI=confidence interval.

Data availability statement

The data that support the findings of this study are available from the corresponding author, [LB], upon reasonable request.