Spearman correlation coefficient(P value) | Category 1 | Category 2 | Category 3 | |||||||
---|---|---|---|---|---|---|---|---|---|---|
22-25 | 26-27 | 28-32 | ||||||||
Cases (n = 254)^{c} |
Subcohort (n = 1,910)^{c} | Mean | SD | Mean | SD | Mean | SD | |||
Percent density | 0.09 (0.15)^{d} | 0.04 (0.07)^{d} | 17.1 | 13.8 | 17.3 | 14.8 | 19.0 | 14.3 | ||
Dense area | 0.28 (< 0.001)^{d} | 0.16 (< 0.001)^{d} | 2,070 | 1,603 | 2,404 | 1,864 | 2,987 | 2,238 | ||
Non-dense area | 0.20 (0.002)^{d} | 0.16 (< 0.001)^{d} | 12,349 | 6,393 | 14,386 | 7,512 | 15,405 | 8,289 | ||
Quartile 1 | Quartile 2 | Quartile 3 | Quartile 4 | |||||||
mAs | 9-126 | 127-173 | 174-194 | 194-371 | ||||||
Mean | SD | Mean | SD | Mean | SD | Mean | SD | |||
Percent density | -0.03 (0.60) | -0.06 (0.008) | 18.4 | 14.3 | 18.4 | 14.9 | 17.1 | 13.9 | 16.3 | 13.3 |
Dense area | 0.14 (0.02) | 0.09 (< 0.001) | 1,958 | 1,481 | 2,432 | 1,843 | 2,415 | 1,867 | 2,534 | 2,086 |
Non-dense area | 0.24 (< 0.001) | 0.25 (< 0.001) | 10,906 | 6,034 | 13,412 | 7,284 | 14,214 | 7,091 | 15,404 | 7,571 |
Quartile 1 | Quartile 2 | Quartile 3 | Quartile 4 | |||||||
Thickness, mm | 6-45 | 46-54 | 55-62 | 62-94 | ||||||
Percent density | -0.25 (< 0.001) | -0.27 (< 0.001) | 23.3 | 16.5 | 17.7 | 13.2 | 15.7 | 12.7 | 13.0 | 11.3 |
Dense area | -0.01 (0.89) | -0.12 (< 0.001) | 2,512 | 1,846 | 2,425 | 1,857 | 2,261 | 1,798 | 2,113 | 1,844 |
Non-dense area | 0.41 (< 0.001) | 0.35 (< 0.001) | 10,211 | 6,210 | 13,604 | 7,142 | 14,152 | 6,632 | 16,236 | 7,494 |
Quartile 1 | Quartile 2 | Quartile 3 | Quartile 4 | |||||||
Compression force, pounds | 6.6-21 | 22-24 | 25-28 | 28-49 | ||||||
Percent density | -0.14 (0.02) | -0.16 (< 0.001) | 20.5 | 15.1 | 18 | 14.5 | 16.9 | 14.1 | 14.2 | 11.6 |
Dense area | -0.01 (0.88) | -0.02 (0.39) | 2,360 | 1,761 | 2,258 | 1,695 | 2,407 | 1,999 | 2,283 | 1,880 |
Non-dense area | 0.26 (< 0.001) | 0.31 (< 0.001) | 10,859 | 5,945 | 12,788 | 6,749 | 14,153 | 6,759 | 16,536 | 8,160 |