From: Mammographic features associated with interval breast cancers in screening programs
Mammographic measure | Cancer detection | Least squares means (cms)a(95% CI) by tertiles of mammographic measures | Â | ||
---|---|---|---|---|---|
Low | Middle | High | P value b | ||
Percent density | All | 1.29 (1.16, 1.42) N?=?277 | 1.46 (1.32, 1.60) N?=?269 | 1.45 (1.32, 1.60) N?=?275 | 0.34 |
 | Screen detected | 1.25 (1.13, 1.39) N?=?260 | 1.36 (1.23, 1.51) N?=?228 | 1.36 (1.22, 1.51) N?=?213 | 0.16 |
 | Interval cancers | 1.50 (1.06, 2.13) N?=?17 | 2.02 (1.61, 2.54) N?=?41 | 1.87 (1.55, 2.26) N?=?62 | 0.09 |
 | P value c | 0.324 | 0.002 | 0.003 |  |
Dense area | All | 1.33 (1.20, 1.47) N?=?275 | 1.35 (1.22, 1.48) N?=?273 | 1.50 (1.37, 1.65) N?=?273 | 0.12 |
 | Screen detected | 1.27 (1.15, 1.41) N?=?247 | 1.27 (1.15, 1.40) N?=?236 | 1.43 (1.29 1.50) N?=?218 | 0.43 |
 | Interval cancers | 1.66 (1.26, 2.19) N?=?28 | 1.98 (1.56, 2.52) N?=?37 | 1.87 (1.53, 2.27) N?=?55 | 0.06 |
 | P value c | 0.068 | 0.001 | 0.017 |  |
Non-dense area | All | 1.39 (1.25, 1.54) N?=?276 | 1.45 (1.31, 1.60) N?=?271 | 1.35 (1.22, 1.51) N?=?274 | 0.93 |
 | Screen detected | 1.31 (1.17, 1.46) N?=?216 | 1.39 (1.25, 1.55) N?=?227 | 1.29 (1.16, 1.44) N?=?258 | 0.78 |
 | Interval cancers | 1.84 (1.51, 2.24) N?=?60 | 1.81 (1.45, 2.25) N?=?44 | 2.06 (1.43, 2.96) N?=?16 | 0.78 |
 | P value c | 0.002 | 0.031 | 0.013 |  |