Table 2 Exposure prevalence and odds ratios (ORs) and 95% confidence intervals (95% CI) associated with exposure to organic solvents (No lag).

From: Occupational exposure to organic solvents and risk of bladder cancer

 

Prevalence of exposurea

Ever Exposedb

Cases

Controls

ORs, 95% CI

N (%)

N (%)

Total

1182

1408

Organic solvents

499

(42.22%)

527

(37.43%)

1.88 (0.84, 4.21)

 Mononuclear aromatic hydrocarbons

368

(31.13%)

369

(26.21%)

1.84 (1.16, 2.91)

  Benzene

146

(12.35%)

139

(9.87%)

1.63 (1.14, 2.32)

  Toluene

101

(8.54%)

96

(6.82%)

1.60 (1.06, 2.43)

  Xylene

94

(7.95%)

87

(6.18%)

1.67 (1.13, 2.48)

  Styrene

32

(2.71%)

40

(2.84%)

0.94 (0.57, 1.55)

 Aliphatic alcohols

135

(11.42%)

140

(9.94%)

1.45 (0.90, 2.35)

  Isopropanol

60

(5.08%)

65

(4.62%)

1.15 (0.74, 1.81)

 Chlorinated alkanes

45

(3.81%)

64

(4.55%)

0.88 (0.55, 1.40)

  Carbon tetrachloride

17

(1.44%)

28

(1.99%)

0.77 (0.40, 1.47)

  Chloroform

0

 

0

  

  Methylene chloride

6

(0.51%)

10

(0.71%)

1.35 (0.45, 4.10)

  1,1,1-Trichlorethane

0

 

0

  

 Chlorinated alkenes

36

(3.05%)

51

(3.62%)

0.79 (0.48, 1.28)

  Perchloroethylene

6

(0.51%)

19

(1.35%)

0.36 (0.13, 0.96)

  Trichloroethylene

0

 

0

  

  Aliphatic ketones

31

(2.62%)

33

(2.34%)

1.16 (0.66, 2.05)

  Aliphatic esters

29

(2.45%)

28

(1.99%)

1.18 (0.67, 2.10)

 Alkanes (C5-C17)

394

(33.33%)

386

(27.41%)

1.66 (0.99, 2.79)

 Alkanes (C18+)

300

(25.38%)

290

(20.60%)

1.25 (0.82, 1.92)

  1. aBased on probability (50%).
  2. bOdd ratio represents ever exposed versus never exposed (excludes uncertain). Adjusted for age, smoking status, state, race, ethnicity (Hispanic) and non-solvent exposed high-risk occupations for bladder cancer.