Table 1.
Variable | Casea (n = 153) | Controlb (n = 153) | P Value |
---|---|---|---|
Age group, y | |||
18–39 | 80.4% | 79.7% | .40 |
≥40 | 19.6% | 20.3% | |
Formal education | |||
Low (less than high school) | 60.9% | 31.8% | <.0001 |
High (high school or more) | 39.1% | 68.2% | |
Pregnancies | |||
Yes | 56.9% | 79.7% | .005 |
No | 43.1% | 20.3% | |
Living children | |||
Yes | 52.9% | 78.4% | .003 |
No | 47.1% | 21.6% | |
Hours worked per week | |||
≤39 | 31.4% | 20.3% | .009 |
≥40 | 68.6% | 79.7% | |
Breast self-examination in previous year | |||
Yes | 34.6% | 95.4% | <.0001 |
No | 65.4% | 4.6% | |
Clinical breast examination in lifetime | |||
Yes | 26.8% | 93.5% | <.0001 |
No | 73.2% | 6.5% | |
Mammograms in lifetimec | |||
Yes | 30.0% | 93.5% | <.0001 |
No | 70.0% | 6.5% |
A case was defined as lack of at least one clinical breast examination during the previous year by surveyed women. For women older than 40, a case was further defined as lack of at least one mammogram in the previous 2 years and, for women older than 50, in the previous year.
A control was defined as adherence by surveyed women to the above guidelines.
Among women aged 40 or older (31 controls, 30 cases).