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. Author manuscript; available in PMC: 2011 Aug 1.
Published in final edited form as: Crit Care Med. 2011 Jan;39(1):40–45. doi: 10.1097/CCM.0b013e3181fa4196

Table 1.

Clinical characteristics of the study participants

Characteristic n = 60
Age (yrs), mean ± sd 52 ± 15
Male 35 (58%)
White 56 (93%)
Smoking history
    Never smoker 13 (22%)
    Former smoker 15 (25%)
    Active smoker 29 (48%)
    Unknown 3 (5%)
Smoking history source
    Patient 3 (5%)
    Surrogate 5 (8%)
    Chart 52 (87%)
Smokeless tobacco use 1 (2%)
Nicotine patch or gum use 0 (0%)
Enrolled within 24 hrs of hospital admission 53 (88%)
Intensive care unit category
    Medical intensive care unit 31 (52%)
    Surgical intensive care unit 9 (15%)
    Trauma 16 (27%)
    Cardiac 4 (7%)
Primary admission diagnosis
    Trauma 15 (25%)
    Acute respiratory failure 10 (17%)
    Sepsis 8 (13%)
    Other 27 (45%)
Acute Physiology and Chronic 26 ± 8
    Health Evaluation II (31), mean ± sd
Insurance coverage
    Private 11 (18%)
    Federal and state sponsored insurance 35 (58%)
    None 10 (17%)
    Other/unknown 4 (7%)