Table 1.

Characteristics of women aged 30 years and older who reported having or not having had a breast MRI—NHIS, United States, 2010

All (n = 11,222)Ever MRI (n = 545)Recent MRIa (n = 253)No MRI (n = 10,677)
Wtd% (95% CI)Wtd% (95% CI)Wtd% (95% CI)Wtd% (95% CI)P valueb
Total100%4.7 (4.3–5.2)2.1 (1.8–2.5)95.3 (94.8–95.7)
AgeN = 11,222N = 545N = 253N = 10,677<0.0001
30–3921.6 (20.7–22.5)7.0 (4.8–10.1)9.0 (5.5–14.4)22.3 (21.4–23.3)
40–4923.2 (22.3–24.2)21.2 (17.1–26.0)26.0 (19.6–33.7)23.3 (22.4–24.4)
50–6431.9 (30.8–32.9)43.5 (38.8–48.2)40.6 (33.6–48.1)31.3 (30.2–32.4)
65–7412.3 (11.6–13.1)13.7 (10.7–17.4)14.1 (9.8–19.8)12.3 (11.6–13.0)
75+10.9 (10.3–11.6)14.6 (11.5–18.4)10.2 (6.8–15.1)10.7 (10.1–11.5)
RaceN = 11,222N = 545N = 253N = 10,6770.0160
White, non-Hispanic70.5 (69.3–71.6)68.5 (64.0–72.6)56.9 (49.5–63.9)70.6 (69.3–71.8)
Black, non-Hispanic11.9 (11.1–12.7)16.8 (13.3–21.1)24.3 (18.2–31.6)11.6 (10.8–12.5)
Asian, non-Hispanic4.8 (4.3–5.3)3.3 (2.1–5.2)5.1 (2.9–8.9)4.8 (4.3–5.4)
Other, non-Hispanic1.0 (0.8–1.3)1.0 (0.3–3.1)1.1 (0.2–5.0)1.0 (0.8–1.3)
Hispanic11.9 (11.2–12.7)10.4 (8.1–13.1)12.6 (9.0–17.4)12.0 (11.2–12.7)
EducationN = 11,184N = 540N = 251N = 10,6440.8967
<High school graduate13.8 (13.0–14.6)12.5 (9.9–15.8)14.0 (9.7–19.7)13.8 (13.0–14.7)
High school graduate26.9 (25.9–27.9)27.8 (23.6–32.5)25.6 (19.8–32.5)26.9 (25.9–27.9)
Some college30.3 (29.3–31.4)30.6 (25.9–35.8)29.4 (22.9–36.8)30.3 (29.3–31.4)
≥College graduate29.0 (27.8–30.3)29.0 (24.5–34.1)31.0 (24.8–38.0)29.0 (27.8–30.3)
Income status, %FPLN = 11,222N = 545N = 253N = 10,6770.2476
<10012.0 (11.3–12.8)12.0 (9.4–15.3)15.5 (11.2–21.0)12.0 (11.3–12.8)
100–19919.0 (18.0–19.9)15.1 (11.6–19.4)15.9 (11.0–22.5)19.1 (18.2–20.2)
200–29916.5 (15.6–17.5)15.2 (11.7–19.4)12.2 (8.1–18.0)16.6 (15.6–17.6)
300–39914.2 (13.3–15.1)15.3 (11.1–20.8)17.5 (12.3–24.4)14.1 (13.3–15.0)
400+38.3 (36.9–39.8)42.4 (37.2–47.8)38.8 (31.8–46.3)38.1 (36.7–39.6)
RegionN = 11,222N = 545N = 253N = 10,6770.3408
Northeast17.7 (16.5–18.8)19.0 (15.2–23.4)21.4 (14.6–30.3)17.6 (16.5–18.8)
Midwest23.1 (21.9–24.3)19.4 (16.1–23.2)20.2 (15.0–26.5)23.3 (22.1–24.5)
South35.8 (34.3–37.4)38.1 (33.1–43.3)37.3 (30.2–45.0)35.7 (34.1–37.3)
West23.4 (22.0–24.9)23.6 (19.4–28.4)21.1 (15.6–27.9)23.4 (22.0–24.9)
Insurance coverageN = 11,197N = 543N = 253N = 10,6540.0178
Private68.7 (67.6–69.9)72.8 (68.1–77.0)68.6 (62.0–74.5)68.5 (67.3–69.7)
Public Only18.1 (17.3–19.0)18.7 (15.3–22.7)19.6 (15.0–25.2)18.1 (17.2–19.0)
Uninsured13.1 (12.4–13.9)8.5 (6.2–11.6)11.8 (7.7–17.7)13.4 (12.6–14.2)
Usual source of healthcareN = 11,222N = 545N = 253N = 10,6770.0064
Yes90.1 (89.4–90.8)93.7 (91.1–95.6)94.2 (90.2–96.6)89.9 (89.2–90.6)
No9.9 (9.2–10.6)6.3 (4.4–8.9)5.8 (3.4–9.8)10.1 (9.4–10.8)
Had recent mammogramaN = 11,126N = 541N = 251N = 10,585<0.0001
Yes55.4 (54.2–56.6)80.9 (76.8–84.5)90.8 (85.0–94.5)54.2 (52.9–55.4)
No44.6 (43.4–45.8)19.1 (15.5–23.2)9.2 (5.5–15.0)45.8 (44.6–47.1)
Results of recent mammogramN = 8,452N = 523N = 243N = 7,929<0.0001
Normal89.4 (88.5–90.2)76.2 (72.0–80.0)64.5 (57.8–70.7)90.2 (89.3–91.1)
Abnormal10.6 (9.8–11.5)23.8 (20.0–28.0)35.5 (29.3–42.2)9.8 (8.9–10.7)
Number of prior breast biopsiesN = 8,384N = 495N = 231N = 7,889<0.0001
081.2 (80.2–82.2)60.8 (55.3–66.0)66.4 (58.5–73.5)82.5 (81.4–83.5)
≥118.8 (17.8–19.8)39.2 (34.0–44.7)33.6 (26.5–41.5)17.5 (16.5–18.6)
Family history of breast cancerN = 10,801N = 527N = 248N = 10,274<0.0001
Yes12.1 (11.3–12.9)19.6 (15.7–24.2)20.9 (15.4–27.8)11.7 (11.0–12.5)
No87.9 (87.1–88.7)80.4 (75.8–84.3)79.1 (72.2–84.6)88.3 (87.5–89.0)
Personal history of breast cancerN = 11,202N = 543N = 253N = 10,659<0.0001
Yes3.3 (2.9–3.7)23.2 (19.1–27.8)24.6 (18.5–31.8)2.3 (2.0–2.6)
No96.7 (96.3–97.1)76.8 (72.2–80.9)75.4 (68.2–81.5)97.7 (97.4–98.0)
Personal history of other cancerN = 11,209N = 545N = 253N = 10,6640.0015
Yes8.3 (7.8–9.0)13.0 (9.9–17.0)13.5 (8.9–19.8)8.1 (7.5–8.8)
No91.7 (91.0–92.2)87.0 (83.0–90.1)86.5 (80.2–91.1)91.9 (91.2–92.5)
Gail 5-year riskN = 10,822N = 417N = 190N = 10,405<0.0001
Average risk82.1 (81.2–82.9)70.1 (64.1–75.5)73.9 (65.8–80.6)82.5 (81.6–83.4)
Increased risk (≥1.66%)17.9 (17.1–18.8)29.9 (24.5–35.9)26.1 (19.4–34.2)17.5 (16.6–18.4)
Gail lifetime riskN = 10,822N = 417N = 190N = 10,4050.0041
<20%98.9 (98.7–99.1)97.0 (93.9–98.6)98.7 (94.5–99.7)99.0 (98.8–99.2)
≥20%1.1 (0.9–1.3)3.0 (1.4–6.1)1.3 (0.3–5.5)1.0 (0.8–1.2)
  • aRecent defined as having within past 2 years.

  • bP value based on Rao–Scott Pearson χ2 test testing for differences in ever and no MRI for all variables except income status. Income status P value based on Wald F test from unadjusted logistic regression model (due to multiply imputed data).