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. 2015 Apr 16;25:15024. doi: 10.1038/npjpcrm.2015.24

Table 2. Sample demographic characteristics.

Characteristic Total (N=50) COPD (Groups 1 & 2) (N=20) Risk, no COPD (Groups 3 & 4) (N=30)
Age, Mean (s.d.) 60 (12) 62 (14) 58 (11)
Gender, n (%) Male 24 (48%) 7 (35%) 17 (57%)
       
Ethnicity, n (%)
 Hispanic or Latino 4/48 (8%) 2 (10%) 2/28 (7%)
 Not Hispanic or Latino 44/48 (92%) 18 (90%) 26/28 (93%)
     
Racial background, n (%) a
 White 36 (72%) 17 (85%) 19 (63%)
 Black or African American 13 (26%) 2 (10%) 11 (37%)
 American Indian or Alaska Native 1 (2%) 1 (5%) 0 (0%)
       
Marital status, n (%)
 Married 16 (32%) 8 (40%) 8 (27%)
 Other (single, divorced, separated, widowed) 34 (68%) 12 (60%) 22 (73%)
   
Employment status, n (%) a
 Employed 17 (34%) 6 (30%) 11 (37%)
 Retired 13 (26%) 8 (40%) 5 (17%)
 Disabled 14 (28%) 6 (30%) 8 (27%)
 Other (student, unemployed, other) 9 (18%) 3 (15%) 6 (20%)
       
Education level, n (%)
 High school or less 16 (32%) 8 (40%) 8 (27%)
 Some college, vocational training 22 (44%) 6 (30%) 16 (53%)
 College degree or more 12 (24%) 6 (30%) 6 (20%)

Abbreviation: COPD, chronic obstructive pulmonary disease.

a

Categories are not mutually exclusive.