Table 1.
Baseline Characteristics of the ORBIT‐AF Population by Medicaid Enrollment
| Variable | Non‐Medicaid (n=9663; 95.4%) | Medicaid (n=470; 4.6%) | P Valuea |
|---|---|---|---|
| Age, y, median (IQR) | 75.0 (67.0–82.0) | 70.0 (61.0–79.0) | <0.0001 |
| Female sex | 41.8 | 53.0 | <0.0001 |
| Race | <0.0001 | ||
| White | 90.7 | 58.7 | |
| Black or African American | 4.4 | 18.1 | |
| Hispanic | 3.5 | 19.4 | |
| Other | 1.3 | 3.4 | |
| Insurance provider | |||
| Other | 2.7 | — | <0.0001 |
| Medicare | 68.1 | — | |
| Private | 26.8 | — | |
| Military health care | 1.1 | — | |
| State‐specific plan (non‐Medicaid) | 0.3 | — | |
| None | 1.0 | — | |
| Education | |||
| Some school | 12.9 | 37.7 | <0.0001 |
| High school graduate | 51.6 | 41.9 | |
| College graduate | 22.9 | 15.5 | |
| Postgraduate | 8.5 | 2.8 | |
| Medical history | |||
| CHF | 31.8 | 47.5 | <0.0001 |
| Past stroke/TIA | 14.8 | 22.3 | <0.0001 |
| COPD | 15.9 | 25.7 | <0.0001 |
| Current smoker | 5.5 | 12.3 | <0.0001 |
| Diabetes | 29.0 | 38.5 | <0.0001 |
| Hypertension | 82.8 | 88.9 | 0.0005 |
| Obstructive sleep apnea | 18.1 | 20.0 | 0.29 |
| CHADS2, median | 2.0 | 2.0 | <0.0001 |
| IQR | 1.0, 3.0 | 2.0, 3.0 | |
| CHA2DS2‐VASc, median | 4.0 | 4.0 | <0.0001 |
| IQR | 3.0, 5.0 | 3.0, 6.0 | |
| CHADS2 ≥2 | 71.5 | 78.7 | <0.0001 |
| ATRIA, median | 3.0 | 3.0 | 0.20 |
| IQR | 1.0, 4.0 | 1.0, 4.0 | |
ATRIA indicates Anticoagulation and Risk Factors in Atrial Fibrillation (ATRIA) study cohort; CHF, congestive heart failure; COPD, chronic obstructive pulmonary disease; HS, high school; IQR, interquartile range; ORBIT‐AF, Outcomes Registry for Better Informed Treatment of Atrial Fibrillation; TIA, transient ischemic attack.
a
P values from Pearson chi‐square tests for categorical variables and Wilcoxon rank‐sum tests for continuous variables.