|
Product category
|
Cases (No.)
|
Controls (No.)
|
Adjusted OR
|
95% CI
|
P
trend
|
|---|
|
Combined cleaning product use
|
|
Quartile 1
|
91
|
99
|
1.0
|
Reference
| |
|
Quartile 2
|
100
|
107
|
1.1
|
0.8, 1.7
| |
|
Quartile 3
|
112
|
125
|
1.1
|
0.7, 1.7
| |
|
Quartile 4
|
104
|
70
|
2.1
|
1.4, 3.3
|
0.003
|
|
Combined air freshener use (sprays and solids)
|
|
Quartile 1
|
74
|
77
|
1.0
|
Reference
| |
|
Quartile 2
|
113
|
117
|
1.1
|
0.7, 1.7
| |
|
Quartile 3
|
123
|
138
|
1.0
|
0.7, 1.6
| |
|
Quartile 4
|
101
|
71
|
1.9
|
1.2, 3.0
|
0.02
|
|
Air freshener spray
|
|
Never use
|
90
|
95
|
1.0
|
Reference
| |
|
Any use
|
322
|
308
|
1.2
|
0.9, 1.8
| |
|
< Once a month
|
83
|
88
|
1.1
|
0.7, 1.7
| |
|
Monthly
|
47
|
41
|
1.3
|
0.8, 2.3
| |
|
Weekly
|
114
|
110
|
1.3
|
0.8, 1.9
| |
|
Daily
|
78
|
69
|
1.3
|
0.8, 2.1
|
0.15
|
|
Solid air freshener
|
|
Never use
|
259
|
288
|
1.0
|
Reference
| |
|
Any use
|
153
|
115
|
1.7
|
1.2, 2.3
| |
|
< 2 times/year
|
50
|
41
|
1.4
|
0.9, 2.2
| |
|
2-6 times/year
|
77
|
58
|
1.7
|
1.2, 2.6
| |
|
≥ 7 times/year
|
26
|
16
|
2.0
|
1.0, 4.0
|
0.001
|
|
Oven cleaner
|
|
Never use
|
33
|
33
|
1.0
|
Reference
| |
|
Any use
|
379
|
370
|
1.0
|
0.6, 1.7
| |
|
< 2 times/year
|
145
|
143
|
1.0
|
0.6, 1.8
| |
|
2-6 times/year
|
199
|
196
|
1.0
|
0.6, 1.7
| |
|
≥ 7 times/year
|
35
|
31
|
1.2
|
0.6, 2.3
|
0.80
|
|
Surface cleaner
|
|
Never use
|
53
|
54
|
1.0
|
Reference
| |
|
Any use
|
359
|
348
|
1.1
|
0.7, 1.7
| |
|
< Once a month
|
61
|
60
|
1.0
|
0.6, 1.6
| |
|
Monthly
|
57
|
57
|
1.0
|
0.6, 1.8
| |
|
Weekly
|
186
|
171
|
1.2
|
0.8, 1.9
| |
|
Daily
|
55
|
60
|
1.2
|
0.7, 2.2
|
0.22
|
|
Mold/mildew control
|
|
Never use
|
296
|
322
|
1.0
|
Reference
| |
|
Any use
|
114
|
81
|
1.7
|
1.2, 2.3
| |
|
Mold/mildew control with bleach
|
|
Never use
|
320
|
334
|
1.0
|
Reference
| |
|
Any use
|
90
|
68
|
1.5
|
1.0, 2.1
| |
|
< Once a month
|
47
|
38
|
1.2
|
0.8, 2.0
| |
|
Monthly
|
14
|
11
|
1.5
|
0.7, 3.5
| |
|
≥ Weekly
|
29
|
19
|
2.0
|
1.1, 3.8
|
0.02
|
- 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" combines frequency of use across five product categories: air freshener spray, solid air freshener, oven cleaner, surface cleaner, and mold/mildew control with bleach.
