|
Beliefs about environmental chemicals/pollutants and breast cancer
|
|---|
| |
Contributes "a lot"
|
Does not contribute "a lot"
|
|---|
|
Product category
|
Cases (no.)
|
Controls (no.)
|
Adj. OR
|
95% CI
|
P
trend
|
Cases (no.)
|
Controls (no.)
|
Adj. OR
|
95% CI
|
P
trend
|
|---|
|
Combined cleaning product use
|
|
Quartile 1
|
39
|
55
|
1.0
|
Ref.
| |
52
|
44
|
1.0
|
Ref.
| |
|
Quartile 2
|
58
|
69
|
1.4
|
0.8, 2.4
| |
42
|
38
|
0.9
|
0.5, 1.8
| |
|
Quartile 3
|
71
|
74
|
1.6
|
0.9, 2.8
| |
41
|
51
|
0.8
|
0.4, 1.4
| |
|
Quartile 4
|
77
|
47
|
3.2
|
1.8, 5.9
|
0.0001
|
27
|
23
|
1.2
|
0.6, 2.6
|
0.96
|
|
Combined air freshener use (sprays and solids)
|
|
Quartile 1
|
34
|
43
|
1.0
|
Ref.
| |
40
|
34
|
1.0
|
Ref.
| |
|
Quartile 2
|
67
|
71
|
1.3
|
0.7, 2.4
| |
46
|
46
|
0.9
|
0.5, 1.7
| |
|
Quartile 3
|
76
|
86
|
1.3
|
0.7, 2.2
| |
47
|
52
|
0.8
|
0.4, 1.6
| |
|
Quartile 4
|
69
|
46
|
2.4
|
1.3, 4.5
|
0.01
|
32
|
25
|
1.4
|
0.7, 3.0
|
0.53
|
|
Air freshener spray
|
|
Never use
|
44
|
50
|
1.0
|
Ref.
| |
46
|
45
|
1.0
|
Ref.
| |
|
Any use
|
203
|
196
|
1.3
|
0.8, 2.1
| |
119
|
112
|
1.2
|
0.7, 2.0
| |
|
< Once a month
|
50
|
57
|
1.1
|
0.6, 2.0
| |
33
|
31
|
1.1
|
0.6, 2.2
| |
|
Monthly
|
32
|
32
|
1.2
|
0.6, 2.3
| |
15
|
9
|
1.9
|
0.7, 5.0
| |
|
Weekly
|
71
|
62
|
1.5
|
0.8, 2.6
| |
43
|
48
|
1.0
|
0.6, 2.0
| |
|
Daily
|
50
|
45
|
1.4
|
0.8, 2.7
|
0.12
|
28
|
24
|
1.2
|
0.6, 2.6
|
0.66
|
|
Solid air freshener
|
|
Never use
|
144
|
174
|
1.0
|
Ref.
| |
115
|
114
|
1.0
|
Ref.
| |
|
Any use
|
102
|
72
|
1.9
|
1.3, 2.9
| |
51
|
43
|
1.4
|
0.8, 2.3
| |
|
< 2/year
|
27
|
28
|
1.3
|
0.7, 2.3
| |
23
|
13
|
1.9
|
0.9, 4.1
| |
|
2-6/year
|
58
|
32
|
2.6
|
1.6, 4.4
| |
19
|
26
|
0.9
|
0.4, 1.8
| |
|
≥ 7/year
|
17
|
12
|
1.7
|
0.8, 3.9
|
0.0007
|
9
|
4
|
2.8
|
0.8, 10.2
|
0.31
|
|
Oven cleaner
|
|
Never use
|
11
|
19
|
1.0
|
Ref.
| |
22
|
14
|
1.0
|
Ref.
| |
|
Any use
|
236
|
227
|
1.8
|
0.8, 4.0
| |
143
|
143
|
0.6
|
0.3, 1.2
| |
|
< 2/year
|
96
|
86
|
2.0
|
0.9, 4.6
| |
49
|
57
|
0.4
|
0.1, 1.3
| |
|
2-6/year
|
112
|
121
|
1.5
|
0.6, 34
| |
87
|
75
|
0.7
|
0.3, 1.5
| |
|
≥ 7/year
|
28
|
20
|
2.4
|
0.9, 6.5
|
0.58
|
7
|
11
|
0.4
|
0.1, 1.3
|
0.73
|
|
Surface cleaner
|
|
Never use
|
29
|
36
|
1.0
|
Ref.
| |
24
|
18
|
1.0
|
Ref.
| |
|
Any use
|
218
|
209
|
1.5
|
0.9,2.7
| |
141
|
139
|
0.7
|
0.4,1.5
| |
|
< Once a month
|
23
|
30
|
0.9
|
0.4, 1.9
| |
38
|
30
|
0.9
|
0.4, 2.0
| |
|
Monthly
|
39
|
36
|
1.5
|
0.7, 3.1
| |
18
|
21
|
0.6
|
0.2, 1.4
| |
|
Weekly
|
120
|
103
|
1.7
|
1.0, 3.0
| |
66
|
68
|
0.7
|
0.3, 1.5
| |
|
Daily
|
36
|
40
|
1.7
|
0.8, 3.6
|
0.02
|
19
|
20
|
0.8
|
0.3, 2.1
|
0.45
|
|
Mold/mildew control
|
|
Never use
|
166
|
197
|
1.0
|
Ref.
| |
130
|
125
|
1.0
|
Ref.
| |
|
Any use
|
80
|
49
|
2.1
|
1.4, 3.3
| |
34
|
32
|
1.1
|
0.6, 2.0
| |
|
Mold/mildew control with bleach
|
|
Never use
|
179
|
202
|
1.0
|
Ref.
| |
141
|
132
|
1.0
|
Ref.
| |
|
Any use
|
67
|
44
|
1.8
|
1.2, 2.9
| |
23
|
24
|
1.0
|
0.5, 2.0
| |
|
< Once a month
|
33
|
25
|
1.4
|
0.8, 2.5
| |
14
|
13
|
1.1
|
0.5, 2.4
| |
|
Monthly
|
10
|
7
|
1.8
|
0.6, 5.1
| |
4
|
4
|
1.1
|
0.3, 4.7
| |
|
≥ Weekly
|
24
|
12
|
3.2
|
1.4, 7.1
|
0.002
|
5
|
7
|
0.8
|
0.2, 2.7
|
0.83
|
- Odds ratios are adjusted for age at diagnosis/reference year, birth decade (six categories), previous breast cancer diagnosis, family history of breast cancer, age at first live or still birth (< 30, ≥ 30/nulliparous), education (five categories). "Combined cleaning product use" product category combines frequency of use across five product categories: air freshener spray, solid air freshener, oven cleaner, surface cleaner, and mold/mildew control with bleach.
