Table 3.
Unadjusted and adjusted models for receipt of any antihypertensive medication
| RR | 95% CI | aRR | 95% CI | |
|---|---|---|---|---|
| Year | ||||
| 2006 | 1.00 | Reference | 1.00 | Reference |
| 2007 | 1.05 | 1.02, 1.07 | 1.04 | 1.02, 1.07 |
| 2008 | 1.06 | 1.04, 1.09 | 1.05 | 1.01, 1.09 |
| 2009 | 1.12 | 1.09, 1.15 | 1.10 | 1.05, 1.14 |
| 2010 | 1.15 | 1.12, 1.17 | 1.11 | 1.06, 1.16 |
| 2011 | 1.19 | 1.16, 1.22 | 1.14 | 1.09, 1.19 |
| 2012 | 1.22 | 1.19, 1.24 | 1.15 | 1.10, 1.21 |
| 2013 | 1.25 | 1.23, 1.28 | 1.17 | 1.11, 1.23 |
| 2014 | 1.29 | 1.26, 1.32 | 1.18 | 1.11, 1.24 |
| 2015 (1Q) | 1.31 | 1.27, 1.35 | 1.19 | 1.12, 1.27 |
| Hospital bed size | ||||
| <400 | 1.00 | Reference | 1.00 | Reference |
| 400–600 | 1.03 | 1.02, 1.04 | 1.06 | 0.96, 1.18 |
| >600 | 1.10 | 1.09, 1.11 | 1.03 | 0.90, 1.18 |
| Age, years | ||||
| 15–17 | 0.95 | 0.92, 0.98 | 0.96 | 0.94, 0.99 |
| 18–24 | 1.00 | Reference | 1.00 | Reference |
| 25–34 | 1.04 | 1.03, 1.05 | 1.05 | 1.04, 1.06 |
| ≥35 | 1.24 | 1.22, 1.25 | 1.17 | 1.15, 1.19 |
| Insurance status | ||||
| Medicare | 1.23 | 1.18, 1.28 | 1.03 | 1.00, 1.07 |
| Medicaid | 1.12 | 1.11, 1.13 | 1.04 | 1.03, 1.06 |
| Private | 1.00 | Reference | 1.00 | Reference |
| Uninsured | 1.09 | 1.06, 1.13 | 1.02 | 0.99, 1.06 |
| Other | 1.02 | 0.99, 1.04 | 1.00 | 0.95, 1.04 |
| Race | ||||
| White | 1.00 | Reference | 1.00 | Reference |
| Black | 1.52 | 1.50, 1.54 | 1.30 | 1.27, 1.33 |
| Other | 1.10 | 1.09, 1.11 | 1.08 | 1.06, 1.10 |
| Unknown | 1.12 | 0.90, 1.39 | 0.92 | 0.76, 1.11 |
| Hospital Location | ||||
| Rural | 0.82 | 0.81, 0.84 | 0.96 | 0.89, 1.03 |
| Urban | 1.00 | Reference | 1.00 | Reference |
| Marital Status | ||||
| Married | 1.00 | Reference | 1.00 | Reference |
| Unmarried | 1.15 | 1.14, 1.16 | 1.06 | 1.04, 1.07 |
| Unknown | 1.08 | 1.06, 1.09 | 0.97 | 0.90, 1.05 |
| Hospital Region | ||||
| Northeast | 1.00 | Reference | 1.00 | Reference |
| Midwest | 0.98 | 0.96, 0.99 | 0.96 | 0.85, 1.10 |
| South | 1.07 | 1.06, 1.09 | 0.92 | 0.81, 1.03 |
| West | 0.93 | 0.92, 0.95 | 1.02 | 0.87, 1.20 |
| Preeclampsia diagnosis | ||||
| Mild preeclampsia | 1.00 | Reference | 1.00 | Reference |
| Severe preeclampsia | 2.27 | 2.25, 2.30 | 2.19 | 2.12, 2.26 |
| Superimposed preeclampsia | 2.58 | 2.55, 2.61 | 2.32 | 2.23, 2.41 |
| Teaching | ||||
| Non-teaching | 1.00 | Reference | 1.00 | Reference |
| Teaching | 1.04 | 1.05 | 1.09 | 0.98, 1.22 |
RR, risk ratio; aRR, adjusted risk ratio; CI, confidence interval. The adjusted model included all factors included in the table: year, hospital bed size, maternal age, insurance status, race, hospital location, marital status, hospital region, preeclampsia diagnosis, and hospital teaching status.