Table 1

Characteristics of adult non-smoking participants with COPD

Characteristic

Overall non-smoking COPD cohort (n = 152)

    Participants in direct SHS exposure assessment study

Completed initial assessment (n = 77)

Completed baseline and 1 year follow-up assessment (n = 68)


Age (yrs)

64.4 (6.0)

65.0 (6.4)

64.8 (6.2)

Male gender (%)

55 (36%)

30 (39%)

27 (40%)

Race-ethnicity (white, non-hispanic)

138 (91%)

72 (94%)

65 (96%)

Educational attainment

High school or less

75 (49%)

33 (43%)

31 (46%)

Some college

44 (29%)

26 (34%)

20 (29%)

College graduate or graduate degree

33 (22%)

18 (23%)

17 (25%)

Past smoking history (%)

109 (72%)

51 (66%)

45 (66%)

COPD severity score

8.2 (6.3)

8.3 (6.6)

8.2 (6.7)

SF-12 physical component summary score

35.0 (11.8)

34.8 (11.7)

35.4 (11.6)

Airways Questionnaire 20 (AQ-20)

8.6 (5.0)

8.5 (4.7)

8.5 (4.6)

Modified MRC dyspnea score

2.5 (1.2)

2.5 (1.2)

2.5 (1.2)


Higher scores on COPD severity score, Airways Questionnaire 20, and modified MRC dyspnea score = poorer health status; higher score on SF-12 Physical Component Summary Score = better health status. There were no statistical differences between non-smoking COPD participants who did and did not complete initial direct SHS assessment (p > 0.15, all cases) (data for those who did not complete initial direct SHS assessment are not shown separately); also no differences between those who completed initial direct SHS assessment who did and did not complete 1 yr follow-up (p > 0.05, all cases).

Eisner et al. BMC Pulmonary Medicine 2006 6:12   doi:10.1186/1471-2466-6-12

Open Data