Table 3 |
||
| Descriptive statistics for breast cancer cases and controls | ||
| Controls | Cases | |
| n | 1146 | 1006 |
| Age @ interview, years, mean | 56.2 | 60.0 |
| Year @ interview (controls), or diagnosis (cases), mean | 2006.3 | 2005.8 |
| Never pregnant, % | 11.9 | 11.9 |
| Number of full-term pregnancies, mean | 2.83 | 2.84 |
| Duration fecundity, year, mean | 32.2 | 33.9 |
| Total breastfeeding, mo, mean | 5.8 | 4.9 |
| Education < HS, % | 13.3 | 23.6 |
| Education = HS or some college, % | 40.1 | 38.7 |
| Education > HS and some college, % | 46.6 | 37.7 |
| Family annual income < $40,000, % | 31.3 | 46.8 |
| Family income >= $40,000 and bluecollar, % | 22.5 | 17.5 |
| Family income >= $40,000 and whitecollar, % | 46.2 | 35.7 |
| Pack-years of smoking (lagged 5 year), mean | 6.39 | 7.52 |
| Duration employed (lagged 5 year), year, mean | 25.7 | 25.5 |
| Cumulative exposure in Major Sectors1 | ||
| Farming, mean | 7.19 | 12.06 |
| Non-plastic light mfg, mean | 1.21 | 1.39 |
| Petrochemical, mean | 0.12 | 0.12 |
| Plastics mfg, mean | 1.99 | 4.13 |
| Metalworking, mean | 2.33 | 4.50 |
| Transportation, mean | 0.88 | 0.71 |
| Beauty care, laundry/dry cleaning, mean | 0.39 | 0.39 |
| Bars-gambling, mean | 0.11 | 0.17 |
1 cumulative exposure on transformed ratings: 1 (low), 2 (moderate), 3 (high) → 0, 1, 10, as rating-year.
Brophy et al. Environmental Health 2012 11:87 doi:10.1186/1476-069X-11-87
