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Table 1 LCRT Subject Characteristics

From: Lung cancer risk test trial: study design, participant baseline characteristics, bronchoscopy safety, and establishment of a biospecimen repository

Baseline characteristics

n = 384

Age in years [mean (SDa)]

62.9 (8.2)

Age in years [median]

62

Male

213 (55 %)

Female

171 (45 %)

Caucasian

343 (89 %)

African American

37 (10 %)

Other or not reported

4 (1 %)

Cigarette pack years [mean (SD)]

50.4 (25.5)

Cigarette pack years [median]

43

Age in years at smoking inception [mean (SD)]

16.1, 3.8

Age in years at smoking inception [median]

16

Total years of smoking [mean (SD)]

37.4 (10)

Total years of smoking [median]

38

History of cigar use

35 (9 %)

History of pipe use

29 (8 %)

Married or living as married

231 (60 %)

Widowed

116 (30 %)

Single

37 (10 %)

Less than high school education

52 (14 %)

High school diploma or GEDb

118 (31 %)

Associate degree or some college

136 (35 %)

Bachelor's degree

40 (10 %)

Graduate degree

24 (6 %)

Other or not reported

14 (4 %)

Employed

109 (28 %)

Unemployed

30 (8 %)

Retired

175 (46 %)

Disabled

64 (17 %)

Other or not reported

6 (2 %)

Income < $40,000/year

141 (37 %)

Income > $40,000/year

123 (32 %)

Other or not reported

120 (31 %)

  1. aSD = standard deviation
  2. bGED = Graduate Educational Development