Table 1

Characterization of study participants stratified by NHL case- control status: demographics and selected medical history


NHL (N = 513)
Controls (N = 1506)
ORbadj [P1](95% CI)

Demographics



     Mean age ± SD (years)
57.7 ± 14.0
54.1 ± 16.0

     Education Levela



          University and Vocational
28 (6.6)
96 (5.5)
1.23 (0.81, 1.88)
          University
94 (18.5)
310 (20.8)
1.08 (0.68, 1.70)
          Vocational
111 (21.9)
358 (24.1)
1.06 (0.67, 1.70)
          Elementary/High school
274 (54.0)
723 (48.6)
1.00
     Ever lived/worked on a farm



          Yes n (%)
235 (45.8)
673 (44.7)
1.02 (0.82, 1.27)
          No n (%)
278 (54.2)
833 (55.3)
1.00

Medical History



     Previous diagnosis of Cancer



          Yes n (%)
74 (14.4)
87 (5.8)
2.56 (1.81, 3.62)c
          No n (%)
439 (85.6)
1419 (94.2)
1.00

a 25 missing

b Adjusted for age (5 year groups) and province

c Statistically significant results are bold.

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