Table 2

Adjusted odds ratio (OR) and 95% confidence interval (95% CI) for different occupations (job titles).

Job Title (code#)
NHL cases
n (%)
Controls
n (%)
OR adj a (95% CI)

Ever held Occupations



Accountant (1)
30 (5.8)
81 (5.4)
1.21 (0.77, 1.89)
Administrator (2)
11 (2.1)
52 (3.4)
0.58 (0.30, 1.15)
Carpenter (12)
21 (4.1)
55 (3.6)
1.06 (0.63, 1.79)
Clerk (17)
14 (2.7)
92 (6.1)
0.44 (0.24, 0.79)
Constructor (19)
14 (2.7)
78 (5.2)
0.51 (0.28, 0.93)
Driver (25)
55 (10.7)
133 (8.8)
1.29 (0.91, 1.82)
Electrician (26)
16 (3.1)
47 (3.1)
0.99 (0.54, 1.78)
Engineer (27)
13 (2.5)
68 (4.5)
0.54 (0.29, 1.02)
Factory worker (29)
13 (2.5)
46 (3.0)
1.14 (0.59, 2.17)
Foreman (30)
11 (2.1)
39 (2.6)
0.64 (0.32, 1.28)
Farmer (31, 33, 89)
86 (16.7)
230 (15.3)
1.14 (0.85, 1.54)
Armed forces (138)
28 (5.5)
92 (6.1)
0.76 (0.48, 1.18)
Janitor (41)
14 (2.7)
40 (2.7)
1.07 (0.57, 2.02)
Labourer (44)
31 (6.0)
99 (6.6)
0.86 (0.56, 1.33)
Lumberman (46)
17 (3.3)
38 (2.5)
1.12 (0.61, 2.03)
Machinist (47)
22 (4.3)
49 (3.2)
1.41 (0.83, 2.40)
Manager (48)
63 (12.3)
183 (12.1)
0.97 (0.70, 1.33)
Mechanic (49)
26 (5.1)
88 (5.8)
0.83 (0.52, 1.31)
Salesman (73)
44 (8.6)
127 (8.4)
1.06 (0.73, 1.53)
School Teacher (74)
31 (6.0)
88 (5.8)
0.96 (0.62, 1.48)
Welder (86)
13 (2.5)
33 (2.2)
1.25 (0.64, 2.44)
Office worker (97)
17 (3.3)
68 (4.5)
0.70 (0.40, 1.22)
Equipment hander (134)
14 (2.7)
37 (2.5)
1.34 (0.70, 2.56)

Long held Occupations



Accountant (1)
20 (3.9)
41 (2.7)
1.39 (0.79, 2.42)
Driver (25)
27 (5.3)
48 (3.2)
1.45 (0.88, 2.37)
Farmer (31, 33, 89)
50 (9.8)
106 (7.0)
1.54 (1.05, 2.27)c
Machinist (47)
12 (2.3)
16 (1.1)
2.21 (1.02, 4.79)c
Manager (48)
31 (6.0)
96 (6.4)
0.86 (0.56, 1.32)
Mechanic (49)
15 (2.9)
49 (2.2)
1.00 (0.99, 1.02)

# Statistics Canada. Standard occupational classification. Ottawa: Minister of Supply and Services, 1980.

a All odds ratios were adjusted for age and province of residence.

c Statistically significant results are bold.

Karunanayake et al. Environmental Health 2008 7:44   doi:10.1186/1476-069X-7-44