Table 1. Selected characteristics of the study population and association with myeloid leukaemia.
| Controls N (%) | All cases N (%) | OR (95% CI) | AML cases N (%) | OR (95% CI) | CML cases N (%) | OR (95% CI) | |
|---|---|---|---|---|---|---|---|
|
Total |
358 |
278 |
|
171 |
|
79 |
|
|
Age (years) | |||||||
| <50 | 108 (30) | 95 (34) | (Matching variable) | 68 (40) | (Matching variable) | 22 (28) | (Matching variable) |
| 50–59 | 80 (22) | 63 (23) | 36 (21) | 24 (30) | |||
| 60–69 | 100 (28) | 77 (28) | 47 (28) | 23 (29) | |||
| 70+ |
70 (20) |
43 (16) |
|
20 (12) |
|
10 (11) |
|
|
Race/ethnicity | |||||||
| Non-hispanic white | 339 (95) | 262 (94) | Ref. | 160 (94) | Ref. | 74 (94) | Ref. |
| Other |
19 (5) |
16 (6) |
1.09 (0.55, 2.16) |
11 (6) |
1.23 (0.57, 2.64) |
5 (6) |
1.21 (0.44, 3.33) |
|
Smoking status | |||||||
| Never | 202 (57) | 136 (49) | Ref. | 85 (50) | Ref. | 36 (46) | Ref. |
| Ever |
152 (43) |
141 (51) |
1.38 (1.01, 1.89) |
85 (50) |
1.33 (0.92, 19.2) |
43 (54) |
1.59 (0.97, 2,59) |
|
Education | |||||||
| <HS | 121 (34) | 86 (31) | 0.81 (0.55, 1.19) | 49 (29) | 0.71 (0.45, 1.11) | 26 (33) | 0.95 (0.52, 1.73) |
| Some post HS | 115 (32) | 101 (36) | Ref. | 66 (39) | Ref. | 26 (33) | Ref. |
| College graduate |
122 (34) |
91 (33) |
0.85 (0.58, 1.24) |
56 (33) |
0.80 (0.52, 1.24) |
27 (34) |
0.98 (0.54, 1.78) |
|
Incomea | |||||||
| ⩽$40 000 | 152 (43) | 118 (43) | 1.06 (0.75, 1.51) | 74 (44) | 1.17 (0.77, 1.77) | 28 (36) | 0.72 (0.42, 1.25) |
| $40 000–$80 000 | 137 (39) | 100 (38) | Ref. | 57 (34) | Ref. | 35 (46) | Ref. |
| >$80 000 | 62 (18) | 54 (20) | 1.19 (0.76, 1.87) | 36 (22) | 1.40 (0.84, 2.33) | 14 (18) | 0.88 (0.44, 1.76) |
Abbreviations: AML=acute myeloid leukaemia; CI=confidence interval; HS=high school; OR=odds ration; Ref.=referent.
a
N does not sum to total due to missing data (6 cases, 7 controls).