Table 4 |
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|
Standardized difference of residences for premenopausal and postmenopausal breast cancer cases and controls by decades; |
||||||
|
Decades |
Case |
Control |
Standardized differences |
No. of areasa > 2SD |
No. of areasa > critical valuesb |
|
|
|
||||||
|
Premenopausal |
1940s |
36 |
86 |
-2.35–2.12 |
2 |
0 |
|
1950s |
222 |
461 |
-2.45–3.15 |
9 |
0 |
|
|
1960s |
341 |
633 |
-4.02–3.78 |
21 |
2 |
|
|
1970s |
514 |
1025 |
-3.89–3.96 |
35 |
2 |
|
|
1980s |
552 |
1005 |
-4.26–4.50 |
24 |
3 |
|
|
1990s |
457 |
723 |
-4.06–4.14 |
32 |
5 |
|
|
|
||||||
|
Postmenopausal |
1930s |
389 |
676 |
-2.51–2.62 |
24 |
0 |
|
1940s |
809 |
1253 |
-3.01–3.04 |
23 |
0 |
|
|
1950s |
1158 |
1968 |
-3.66–2.91 |
22 |
0 |
|
|
1960s |
1247 |
2072 |
-4.18–2.99 |
18 |
0 |
|
|
1970s |
1100 |
1839 |
-4.98–3.13 |
21 |
0 |
|
|
1980s |
960 |
1651 |
-3.84–2.85 |
23 |
0 |
|
|
1990s |
943 |
1542 |
-4.40–3.57 |
22 |
0 |
|
|
|
||||||
|
a Areas refer to the rectangular grid overlaid on to the study area, b Critical values of 3.88 for premenopausal and 3.71 for postmenopausal residences. |
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|
Han et al. International Journal of Health Geographics 2005 4:9 doi:10.1186/1476-072X-4-9 |
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