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Table 1 Characteristics of the Sample in Two Massachusetts Urban Safety Net Hospital Systems, 2005–2013

From: Is insurance instability associated with hypertension outcomes and does this vary by race/ethnicity?

Variable

n = 43,785

Age (years) (mean (SD))

47.4 (10.9)

Male

20,178 (46.1)

Race

 Non-Hispanic White

12,520 (28.6)

 Hispanic

3220 (7.4)

 Black/African-American

25,221 (57.6)

 Asian/Asian Pacific Islander

2824 (6.4)

Charlson Comorbidity Score

 0

23,764 (54.3)

 1

11,155 (25.5)

  ≥ 2

8866 (20.2)

Percent in Census Tract High School Graduation or Higher (mean (SD))

82.3 (10.3)

Median Census Tract Income (2014 dollars, mean (SD))

$57,606 ($25,571)

Location

 Healthcare System A

23,454 (53.6)

 Healthcare System A Affiliated Health Centers

16,180 (37.0)

 Healthcare System B

4151 (9.4)

  1. Note: Results are frequency (%) unless otherwise indicated. In the main sample, sex was missing for 1 person, and census tract education and income were missing for 3195 people (7%)