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. 2018 Jan 22;2018:6026315. doi: 10.1155/2018/6026315

Table 2.

Relationships between patient and clinical characteristics of women with breast cancer and mammographic density measurements (unadjusted and adjusted analysis).

Clinical characteristic n (%) Percent density (%) Absolute dense area Nondense area
Unadjusted Adjusted Unadjusted Adjusted Unadjusted Adjusted
Mean 95% CI Mean 95% CI Mean 95% CI Mean 95% CI Mean 95% CI Mean 95% CI
Age
 <50 years 48 39 31.9 28.6 35.2 31.8 28.4 35.2 106.2 91.5 120.9 110.1 95.0 125.3 223.8 189.3 258.4 232.5 200.3 264.8
 ≥50 years 75 61 19.9 17.8 22.0 19.8 17.7 21.9 70.7 61.1 80.2 72.1 62.4 81.7 301.6 269.5 333.7 306.9 277.7 336.0
P value <0.01 <0.01 <0.01 <0.01 0.03 0.02
Menopausal status
 Pre 42 34 30.7 27.1 34.2 24.0 19.9 28.0 96.2 80.9 111.5 69.1 52.8 85.4 214.1 178.2 250.1 228.8 184.8 272.8
 Post 81 66 21.2 19.0 23.3 24.1 21.6 26.7 77.5 67.6 87.4 94.7 82.7 106.7 301.4 270.6 332.1 303.1 271.3 334.9
P value <0.01 0.96 0.15 0.13 0.01 0.10
BMI category
 Lean 18 15 27.0 21.7 32.2 26.2 21.4 31.0 50.8 34.3 67.3 49.1 33.3 64.8 133.8 95.1 172.5 137.0 98.6 175.5
 Overweight 54 44 25.4 22.5 28.4 24.9 22.2 27.6 86.1 73.6 98.6 84.5 72.5 96.5 261.9 230.4 293.3 265.1 234.1 296.2
 Obese 43 35 21.3 18.3 24.3 22.2 19.3 25.1 102.9 87.6 118.2 106.1 91.0 121.2 376.0 333.8 418.2 368.8 327.6 409.9
P value for trend 0.29 0.52 0.01 <0.01 <0.01 <0.01
Diagnosis
 Invasive ductal 105 85 24.6 22.5 26.6 24.1 22.1 26.0 80.7 71.8 89.6 82.8 74.3 91.4 256.7 231.5 281.9 268.0 245.2 290.8
 Other 18 15 22.6 17.7 27.4 23.9 18.9 28.9 101.8 77.7 125.9 106.2 81.2 131.2 353.4 282.1 424.7 342.3 275.8 408.8
P value 0.59 0.94 0.25 0.21 0.07 0.14
Tumor size
 <3 cm 53 43 22.7 19.9 25.6 22.1 19.4 24.7 72.5 60.8 84.1 74.4 63.3 85.5 254.5 218.6 290.4 271.3 238.5 303.1
 ≥3 cm 58 47 24.8 22.0 27.7 24.9 22.2 27.7 91.5 79.0 104.1 93.2 80.9 105.5 289.9 253.3 326.5 283.6 255.6 321.6
P value 0.47 0.30 0.13 0.12 0.34 0.60
Tumor grade
 Grade 1 14 11 31.4 25.0 37.9 30.5 24.6 36.4 107.3 78.9 135.7 118.7 91.1 146.4 253.2 184.8 321.5 295.5 230.5 360.4
 Grade 2 57 46 22.8 20.1 25.6 22.9 20.3 25.5 82.0 69.7 94.3 88.2 76.1 100.3 280.3 244.5 316.1 294.4 261.5 327.4
 Grade 3 49 40 24.8 21.7 27.8 24.1 21.3 27.0 78.8 65.8 91.9 74.2 62.2 86.1 247.5 211.2 283.8 242.0 209.9 274.2
P value for trend 0.21 0.25 0.43 0.10 0.65 0.26
BMI: body mass index
Nodal status
 Negative 49 40 24.8 21.6 27.9 24.1 21.1 27.0 92.1 78.2 106.0 91.6 78.3 104.9 297.9 257.8 337.9 298.4 263.1 333.8
 Positive 60 49 22.9 20.2 25.6 22.9 20.3 25.4 76.1 64.7 87.5 79.4 68.5 90.3 257.2 223.5 290.8 270.3 240.7 299.8
P value 0.53 0.67 0.22 0.33 0.28 0.40

Adjusted for age and BMI. BMI: body mass index.