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. Author manuscript; available in PMC: 2018 Oct 25.
Published in final edited form as: Prev Med. 2018 May 3;112:199–206. doi: 10.1016/j.ypmed.2018.05.001

Table 1.

Recommendation-consistent colorectal cancer screening among adults 50–75, 2015 National Health Interview Survey.

Demographics Total un-
weighted
sample size
Recommendation-
consistent
screening (1)
Colonoscopy
within the past
10 years (2)
FOBT within
the past year
(3)
Sigmoidoscopy within
the past 5 years &
FOBT within the past
3 years (4)
p-Value for
demographic subgroup
differences < .05h
p-Value for demographic
subgroup
differences < .001h
Weighted %
(95% CI)
Weighted %
(95% CI)
Weighted %
(95% CI)
Weighted %
(95% CI)
Overall 12,541 61.3 (60.0–62.6) 58.3 (57.0–59.6) 7.1 (6.5–7.8) 0.7 (0.5–0.9)
Age
 50–64 7889 56.4 (54.7–58.0) 53.4 (51.8–55.1) 5.9 (5.2–6.7) 0.6 (0.4–0.9) 1,2,3 1,2,3
 65–75 4652 71.7 (69.9–73.5) 68.5 (66.7–70.3) 9.6 (8.4–11.0) 0.9 (0.6–1.3)
Sex
 Male 5703 60.7 (58.9–62.5) 57.6 (55.8–59.3) 7.5 (6.6–8.6) 1.0 (0.7–1.5) 4
 Female 6838 62.0 (60.3–63.6) 59.1 (57.4–60.7) 6.8 (6.0–7.6) 0.35 (0.2–0.5)
Race/ethnicity
 Non-Hispanic white 8557 64.2 (62.6–65.7) 61.5 (59.9–63.0) 6.8 (6.1–7.6) 0.7 (0.5–1.0) 1,2,4 1,2,4
 Non-Hispanic black 1683 60.0 (56.9–63.1) 56.7 (53.5–59.8) 7.9 (6.3–9.8) 0.6g (0.3–1.3)
 Hispanic 1477 48.3 (45.1–51.5) 44.9 (41.7–48.2) 7.4 (5.8–9.3) 0.9g (0.5–1.7)
 Non-Hispanic Asian 552 52.5 (47.0–57.9) 46.3 (40.9–51.8) 9.6 (6.8–13.4) 0.2g (0.1–0.7)
 Non-Hispanic other 272 55.6 (46.9–63.9) 52.5 (43.7–61.0) 6.4 (3.7–10.7) 0.0 (0.0–0.1)
Education
 Less than high school graduate 1674 45.0 (41.9–48.1) 42.3 (39.2–45.4) 6.4 (5.0–8.2) 0.6g (0.3–1.2) 1,2 1,2
 High school graduate 3243 56.8 (54.4–59.2) 53.8 (51.5–56.1) 7.0 (5.9–8.4) 0.4 (0.2–0.8)
 Some college/associates degree 3860 62.8 (60.6–64.9) 59.6 (57.5–61.7) 7.1 (6.0–8.4) 0.5g (0.3–0.9)
 Bachelor's degree or higher 3720 69.5 (67.4–71.5) 66.4 (64.3–68.5) 7.6 (6.6–8.7) 1.0 (0.6–1.6)
Marital status
 Married 6246 65.0 (63.3–66.6) 61.8 (60.1–63.4) 7.7 (6.8–8.6) 0.8 (0.5–1.1) 1,2,3 1,2
 Not married 6267 54.9 (53.1–56.7) 52.2 (50.4–54.0) 6.2 (5.5–7.1) 0.5 (0.3–0.7)
Family income (% federal poverty level)
 ≤138% 2664 46.1 (43.5–48.7) 60.6 (59.1–62.0) 6.1 (4.9–7.6) 0.6g (0.3–1.3) 1,2,3,4 1,2
 > 138–≤200% 1358 51.7 (47.7–55.6) 47.8 (43.9–51.8) 8.2 (6.4–10.5) 0.3g (0.1–0.7)
 > 200–≤400% 3503 59.5 (57.1–62.0) 57.0 (54.4–59.4) 5.9 (4.8–7.1) 0.4 (0.2–0.7)
 > 400% 5016 69.2 (67.5–71.0) 66.1 (64.3–67.8) 8.0 (7.0–9.1) 0.9 (0.6–1.4)
Time in the United States (US)
 Born in the US 10,618 63.3 (61.9–64.8) 60.6 (59.1–62.0) 6.9 (6.3–7.7) 0.7 (0.5–0.9) 1,2,4 1,2,4
 Not born in the US, but lived in US for 10+ years 1766 52.2 (49.3–55.2) 48.2 (45.2–51.1) 7.9 (6.6–9.5) 0.6g (0.3–1.2)
 Not born in the US, but lived in US for < 10 years 132 35.8 (26.4–46.4) 28.6 (20.0–39.1) 10.0g (5.0 - 19.1)
Family out-of-pocket spending on medical care in the past 12 months
 $0 1548 42.4 (39.0–45.8) 40.0 (36.6–43.4) 3.7 (2.7–5.1) 0.2g (0.1–0.4) 1,2,3,4 1,2,3
 $1–$1999 7938 61.8 (60.2–63.4) 58.5 (56.9–60.1) 7.5 (6.7–8.4) 0.7 (0.5–1.0)
 ≥ $2000 2884 67.1 (64.5–69.6) 64.6 (61.9–67.1) 7.4 (6.3–8.6) 0.9 (0.5–1.5)
Usual place of care
 Yes 11,542 63.9 (62.5–65.3) 60.7 (59.4–62.0) 7.5 (6.9–8.2) 0.7 (0.5–0.9) 1,2,3 1,2,3
 No 995 27.6 (23.4–32.1) 26.7 (22.5–31.2) 1.9 (0.9–3.8) 0.2g (0.1–0.8)
# of physician visits in the past year
 0 1463 28.6 (25.3–32.1) 27.6 (24.4–31.1) 1.6g (0.8 - 2.9) 1,2,3 1,2,3
 1 1845 55.5 (52.3–58.7) 51.6 (48.3–54.9) 6.1 (4.9–7.6) 0.4g(0.2–0.9)
 2+ 9207 67.4 (65.9–68.9) 64.2 (62.7–65.6) 8.1 (7.4–9.0) 0.7 (0.5–1.1)
Chronic conditionsa
 0 3159 51.7 (49.4–54.1) 48.3 (46.0–50.5) 5.8 (4.6–7.2) 1.1 (0.6–1.9) 1,2,3 1,2,3
 1 3588 62.0 (59.9–64.1) 59.2 (57.0–61.3) 6.3 (5.3–7.5) 0.4 (0.2–0.8)
 2+ 5794 66.9 (65.0–68.8) 64.0 (62.1–65.9) 8.5 (7.5–9.6) 0.7 (0.4–1.0)
Health insurance (age 50–64)
 Traditional employer sponsored private 2923 62.2 (59.7–64.5) 58.4 (55.9–60.8) 6.7 (5.6–8.0) 0.8g (0.4–1.6) 1,2 1,2
 High deductible employer sponsored plan 1375 61.5 (57.9–65.0) 58.8 (55.2–62.3) 5.7 (4.1–7.9) 0.5g (0.2–1.3)
 Traditional directly purchased privateb 420 50.9 (44.1–57.6) 48.2 (41.5–55.0) 4.9 (2.9–8.2)
 High deductible directly purchased plan 362 55.9 (48.7–62.9) 54.7 (47.4–61.8) 4.3g (2.2 - 8.2) 0.2g (0.0–0.7)
 Medicaid or other Publicc 1081 47.4 (43.3–51.6) 45.5 (41.4–49.7) 4.6 (3.2–6.5)
 Medicare disability 374 64.2 (56.2–71.4) 61.6 (53.5–69.2) 8.8 (4.9–15.1)
 Military coveraged 313 73.4 (65.4–80.1 68.9 (61.0–75.9) 9 (5.7–14.0)
 Uninsured 750 24.8 (20.7–29.5) 23.2 (19.1–27.9) 4.0 (2.4–6.7)
Health insurance (age
 65–75)
Medicare and privatee
2233 76.3 (73.7–78.6) 73.5 (70.9–76.0) 9.1 (7.5–10.9) 0.6g(0.3–1.2) 1,2 1,2
 Medicare only 1573 68.8 (65.7–71.8) 65.0 (61.9–67.9) 10.8 (8.8–13.2) 1.2g (0.6–2.4)
 Medicare and Medicaidf 720 65.2 (60.2–69.9) 62.4 (57.4–67.1) 9.1 (6.4–12.6) 1.2g (0.5–2.8)

Estimates were age adjusted to the 2000 United States standard population by 5-year age groups. Screening within recommendations was defined as home FOBT within the past year, sigmoidoscopy within the past 5 years and FOBT within the past 3 years, or colonoscopy within the past 10 years. Percentages were weighted to account for the complex design of NHIS. Estimates with relative standard errors > 50% were suppressed and are indicated by “–”. Analyses were not adjusted for multiple comparisons. CI=confidence interval, FOBT=fecal occult blood test.

a

Chronic conditions were defined as any diagnosis of cancer, hypertension, coronary heart disease, stroke, emphysema, chronic obstructive pulmonary disease, diabetes, arthritis, rheumatoid arthritis, gout, lupus, fibromyalgia, and hepatitis; a diagnosis of chronic bronchitis or weak or failing kidneys in the past 12 months; or a current diagnosis of asthma.

b

Includes private plans obtained through the health insurance marketplace, school, or means other than employment.

c

Include insurance classified as public only, other government only and SCHIP.

d

Includes coverage through TRICARE, VA, and champ-VA. Military coverage is restricted to civilians only and includes those with military coverage and Medicare disability.

e

Includes those who have only private coverage.

f

Includes other state-sponsored health plans.

g

Estimates are based on small sample size and relative standard errors ranging from 30 to 50%.

h

Screening within recommendations and the individual screening modalities were compared for demographic subgroups. Statistically significant subgroup differences for screening within recommendations, colonoscopy within the past 10 years, FOBT within the past year and sigmoidoscopy within the past 5 years and FOBT within the past 3 years are denoted 1, 2, 3, and 4 respectively.