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. Author manuscript; available in PMC: 2015 Aug 4.
Published in final edited form as: Am J Ind Med. 2012 Mar 5;55(5):429–439. doi: 10.1002/ajim.22031

Table I.

Individual and Occupational Factors by Current Smoking among Building Trades Workers (N=1,817)

Totala
Characteristics Total N=1,817 Current Smoker N=763, 42.7% Non Smoker N=1025, 57.3% P-value*
Individual factors
    Age (year) <0.001
        Mean ± SD (range) 28.5 ± 6.6 (18–53) 27.7 ± 5.9 (18–49) 29.1 ± 7.0 (18–53)
    Gender, n (%) 0.351
        Male 1679 (92.4) 700 (91.7) 957 (93.4)
        Female 88 (4.8) 44 (5.8) 44 (4.3)
        Missing 50 (2.8) 19 (2.5) 24 (2.3)
    Race/Ethnicity, n (%) 0.002
        Hispanic 65 (3.6) 18 (2.4) 44(4.3)
        African America, non-Hispanic 125 (6.9) 40 (5.2) 85(8.3)
        Other, non-Hispanic 114 (6.3) 44 (5.8) 69(6.7)
        White, non-Hispanic 1389 (76.4) 619 (81.1) 753 (73.5)
        Missing 124 (6.8) 42 (5.5) 74 (7.2)
    Education, n (%) 0.026
        High school/GEDb or less 894 (49.2) 392 (51.4) 490 (47.8)
        Some college or 2-year degree 674 (37.1) 287 (37.6) 379 (37.0)
        4-year college degree or more 155 (8.5) 48 (6.3) 105 (10.2)
        Missing 94 (5.2) 36 (4.7) 51 (5.0)
    Income, n (%) 0.090
        <$50,000 675 (37.1) 301 (39.4) 365 (35.6)
        $50,000-74,999 390 (21.5) 172 (22.5) 211 (20.6)
        ≥$75,000 474 (26.1) 181 (23.7) 291 (28.4)
        Missing 278 (15.3) 109 (14.3) 158 (15.4)
    Self-rated health, n (%) <0.001
        Excellent 260 (14.3) 77 (10.1) 178 (17.4)
        Very good 768 (42.3) 282 (37.0) 475 (46.3)
        Good 655 (36.0) 332 (43.5) 316 (30.8)
        Fair 108 (5.9) 63 (8.3) 41 (4.0)
        Poor 11 (0.6) 7 (0.9) 4 (0.4)
        Missing 15 (0.8) 2 (0.3) 11 (1.1)
Occupational factors
    Trade type, n (%) 0.807
        Electricians 754 (41.5) 303 (39.7) 439 (42.8)
        Plumbers and pipefitters 576 (31.7) 245 (32.1) 327 (31.9)
        Bricklayers 152 (8.4) 68 (8.9) 76 (7.4)
        Ironworkers 110 (6.1) 50 (6.6) 59 (5.8)
        Painters 117 (6.4) 50 (6.6) 63 (6.1)
        Sprinkler fitters 78 (4.3) 33 (4.3) 45 (4.4)
        Operating engineers 30 (1.7) 14 (1.8) 16 (1.6)
    Union commitmentc 0.215
        Mean ± SD (range) 17.7±2.0 (9–20) 17.8 ± 2.0 (9–20) 17.6 ± 2.0 (9–20)
Job satisfaction, n (%) 0.144
        Very satisfied 1081 (59.5) 468 (61.3) 599 (58.4)
        Somewhat satisfied 525 (32.0) 232 (30.4) 341 (33.3)
        Not too satisfied 101 (5.6) 40 (5.2) 59 (5.8)
        Not at all satisfied 24 (1.3) 14 (1.8) 8 (0.8)
        Missing 29 (1.6) 9 (1.2) 18 (1.8)
Exposure to occupational hazards
    Work-related musculoskeletal hazards, n (%) 0.064
        Exposed 1036 (57.0) 456 (59.8) 565 (55.1)
        Not exposed 770 (42.4) 305 (40.0) 452 (44.1)
        Missing 11 (0.6) 2 (0.3) 8 (0.8)
    Dust, n (%) 0.015
        Exposed 1394 (76.7) 611 (80.1) 761 (74.2)
        Unexposed 397 (21.8) 143 (18.7) 249 (24.3)
        Missing 26 (1.4) 9 (1.2) 15 (1.5)
    Chemicals, n (%) 0.011
        Exposed 499 (27.5) 238 (31.2) 254 (24.8)
        Unexposed 1290 (71.0) 516 (67.6) 756 (73.8)
        Missing 28 (1.5) 9 (1.2) 15 (1.5)
    SHSd, n (%) 0.073
        Exposed 776 (42.7) 339 (44.4) 429 (41.9)
        Unexposed 1021 (56.2) 421 (55.2) 582 (56.8)
        Missing 20 (1.1) 3(0.4) 14 (1.4)
    Injuries, n (%) 0.760
        Exposed 527 (29.0) 227 (29.8) 295 (28.8)
        Unexposed 1272 (70.0) 530 (69.5) 719 (70.1)
        Missing 18 (1.0) 6 (0.8) 11 (1.1)
Concern about exposure to occupational hazardse <0.001
        Mean ± SD (range) 15.6 ± 4.5 (6–24) 14.9 ± 4.3 (6–24) 16.2 ± 4.6 (6–24)

All values were calculated prior to imputing missing covariates.

a

Twenty-nine participants did not reply to the smoking outcome variable.

b

GED, general educational development.

c

A high score indicates more a positive view toward the union.

d

SHS, second-hand smoke.

e

A high score indicates more concern about exposure to occupational hazards.

*

P value for χ2 test or t-test.