Table 4.
The relationships between peak intensities and the presence of breast cancer before and after adjustment for sample characteristics and subject age
| n | Crude OR (95%CI) | Adjusted OR* (95%CI) | ||
| cases | controls | |||
| M/z 4276 | ||||
| Low intensity | 36 | 16 | 6.0 (2.0–18.2) | 5.3 (1.7–17.0) |
| Intermediate intensity | 5 | 16 | 0.8 (0.2–3.3) | 0.9 (0.2–3.7) |
| High intensity | 6 | 16 | 1.0 (referent) | 1.0 (referent) |
| M/z 4292 | ||||
| Low intensity | 38 | 16 | 7.6 (2.4–24.3) | 6.4 (1.8–22.3) |
| Intermediate intensity | 4 | 16 | 0.8 (0.2–3.5) | 0.7 (0.2–3.1) |
| High intensity | 5 | 16 | 1.0 (referent) | 1.0 (referent) |
| M/z 8129 | ||||
| Low intensity | 13 | 16 | 0.8 (0.3–2.3) | 0.7 (0.2–2.0) |
| Intermediate intensity | 19 | 17 | 1.1 (0.4–2.9) | 1.0 (0.4–2.8) |
| High intensity | 15 | 15 | 1.0 (referent) | 1.0 (referent) |
| M/z 8941 | ||||
| Low intensity | 39 | 16 | 13.0 (3.3–50.8) | 13.3 (3.2–55.0) |
| Intermediate intensity | 5 | 16 | 1.7 (0.3–8.2) | 1.8 (0.4–9.1) |
| High intensity | 3 | 16 | 1.0 (referent) | 1.0 (referent) |
* OR's (odds ratios) with 95%CI (95% Confidence Interval) were adjusted for the following variables; day of preparation (day 1 or day 2), age (continuous) and storage duration (continuous).
M/z = Mass to Charge ratio, Tertiles of the intensities per peak were determined in the controls, separately for day of preparation, applied to cases prepared on the same day and afterwards combined in three categories.