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. Author manuscript; available in PMC: 2010 Oct 1.
Published in final edited form as: COPD. 2009 Oct;6(5):359–368. doi: 10.1080/15412550903143919

Table 1.

Demographic Characteristics of the Sample

Combined Sample
(n = 526)
Tertiary Care
(n = 402)
Public Hospital
(n = 124)
P Value for Comparison

Variable N (%) N (%) N (%)
Gender 0.07
 Male 275 (52.4) 219 (54.6) 56 (45.2)
 Female 250 (47.6) 182 (45.4) 68 (54.8)

Age 0.01
 Less than 60 113 (21.5) 74 (18.4) 39 (31.5)
 60 to 64 100 (19.0) 75 (18.7) 25 (20.2)
 65 to 69 115 (21.9) 88 (21.9) 27 (21.8)
 70 to 74 95 (18.1) 77 (19.2) 18 (14.5)
 75 or more 103 (19.6) 88 (21.9) 15 (12.1)

Race/ethnicity <0.001
 Caucasian non-Hispanic 448 (85.2) 379 (94.3) 69 (55.6)
 Black non-Hispanic 31 (5.9) 10 (2.5) 21 (16.9)
 Hispanic 38 (7.2) 8 (2.0) 30 (24.2)
 Other 9 (1.7) 5 (1.2) 4 (3.2)

Relationship Status <0.001
 Married 265 (50.5) 244 (60.8) 21 (16.9)
 Member of an unmarried couple 13 (2.5) 8 (2.0) 5 (4.0)
 Divorced/separated 148 (28.2) 87 (21.7) 61 (49.2)
 Widowed 66 (12.6) 47 (11.7) 19 (15.3)
 Never married 33 (6.3) 15 (3.7) 18 (14.5)

Education <0.001
 Some high school or less 68 (13.1) 29 (7.3) 39 (31.5)
 High school graduate 130 (25.0) 95 (23.9) 35 (28.2)
 Some college or technical school 203 (39.0) 161 (40.6) 42 (33.9)
 College graduate 120 (23.0) 112 (28.2) 8 (6.5)

Income <0.001
 Less than $15,000 166 (33.0) 64 (16.7) 102 (85.0)
 Between $15,001 and $25,000 66 (13.1) 52 (13.6) 14 (11.7)
 Between $25,001 and $35,000 79 (15.7) 78 (20.4) 1 (0.8)
 Between $35,001 and $50,000 62 (12.3) 61 (15.9) 1 (0.8)
 Between $50,001 and $75,000 63 (12.5) 62 (16.2) 1 (0.8)
 $75,001 or more 67 (13.3) 66 (17.2) 1 (0.8)