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. Author manuscript; available in PMC: 2017 Feb 1.
Published in final edited form as: Am J Gastroenterol. 2016 Jan 12;111(2):269–274. doi: 10.1038/ajg.2015.419

Table 1.

Baseline characteristics of men and women reporting anal intercourse, NHANES 2009–2010

Characteristica Men (anal and oral intercourse) N=2,118
P value Women (anal intercourse) N=2,091
P value
No (n=2,017) Yes (n=101) No (n=1,348) Yes (n=743)
Age decade (years) 0.22 0.009

 20–29 97.0 (95.1–98.2) 3.0 (1.8–5.0) 57.7 (50.5–64.6) 42.3 (35.4–49.7)

 30–39 93.7 (90.4–95.9) 6.3 (4.1–9.6) 60.0 (54.6–64.5) 40.3 (35.5–45.4)

 40–49 96.5 (93.1–95.9) 3.5 (1.8–6.9) 59.4 (54.3–64.3) 40.6 (35.7–45.8)

 50–59 94.0 (88.3–97.0) 6.0 (3.0–11.7) 66.2 (60.0–71.9) 33.8 (28.1–40.0)

 66–69 96.3 (92.5–98.1) 3.7 (1.8–7.5) 72.5 (67.2–77.3) 27.5 (39.1–47.0)

Race/Ethnicity 0.50 0.06

 Hispanic-Mexican American 96.1 (91.2–98.3) 3.9 (1.7–8.8) 67.9 (61.6–73.5) 32.2 (26.5–38.4)

 Hispanic—other 94.6 (88.9–97.5) 5.4 (2.5–11.1) 60.7 (49.0–71.2) 39.4 (28.8–51.0)

 Non-Hispanic white 95.1 (92.9–96.7) 4.9 (3.3–7.1) 60.0 (56.0–63.9) 40.0 (36.1–44.0)

 Non-Hispanic black 95.7 (93.2–97.3) 4.3 (2.7–6.8) 71.8 (65.2–77.5) 28.2 (22.5–34.8)

 Other—including multi-racial 98.5 (91.9–99.7) 1.5 (0.3–8.1) 69.9 (54.1–80.6) 31.1 (19.4–45.9)

Education 0.02 0.02

 <High school 98.6 (97.6–99.2) 1.4 (0.8–2.4) 70.3 (64.3–75.8) 29.7 (24.2–35.8)

 High school 95.8 (93.1–97.5) 4.2 (2.5–6.9) 57.6 (51.9–63.1) 42.4 (36.9–48.1)

 >High school 94.4 (91.8–96.2) 5.6 (3.8–8.2) 62.4 (59.1–65.6) 37.6 (34.4–40.9)

Poverty status 0.13 0.70

 At or below level 92.5 (86.7–95.9) 7.5 (4.1–13.3) 61.7 (55.9–67.2) 38.3 (32.8–44.1)

 1× above level 96.1 (92.1–98.1) 3.9 (1.9–7.8) 64.5 (58.6–70.0) 35.5 (30.0–41.4)

 2× above level 95.8 (94.4–96.9) 4.2 (3.1–5.6) 62.4 (59.5–65.3) 37.6 (34.7–40.6)

BMI 0.45 0.76

 <25.0 94.9 (92.0–96.8) 5.1 (3.2–8.0) 63.8 (58.1–69.1) 36.2 (30.9–41.9)

 25.0–29.9 95.0 (92.7–96.7) 5.0 (3.3–7.3) 61.2 (54.7–67.1) 38.9 (33.0–45.3)

 >30.0 96.4 (93.8–97.9) 3.6 (2.1–6.2) 62.8 (59.3–66.2) 37.2 (33.8–40.7)

Number of comorbid conditions 0.72 0.67

 None 95.5 (94.1–96.6) 4.5 (3.4–5.9) 62.4 (58.4–66.3) 37.6 (33.8–41.6)

 1 96.2 (93.5–97.8) 3.9 (2.3–6.5) 63.4 (60.9–65.9) 36.6 (34.1–39.1)

 2 93.6 (81.0–98.1) 6.4 (1.9–19.0) 65.2 (56.2–73.2) 34.9 (26.8–43.8)

 3 or more 93.0 (69.7–98.7) 7.0 (1.3–30.3) 57.2 (42.4–70.9) 42.8 (29.1–57.6)

Depression (moderate–severe)b 0.37 0.01

 No 95.5 (94.0–96.7) 4.5 (3.3–6.0) 63.2 (60.5–65.7) 36.9 (34.3–39.5)

 Yes 93.8 (86.8–97.2) 6.2 (2.8–13.2) 50.4 (41.0–59.8) 49.6 (40.2–59.0)

Fecal incontinence (monthly or more) 0.03 0.05

 No 95.8 (94.1–97.0) 4.3 (3.0–5.9) 63.4 (61.0–65.6) 36.7 (34.4–39.0)

 Yes 90.6 (83.7–94.7) 9.4 (5.3–16.3) 55.6 (46.9–63.9) 44.4 (36.1–53.1)

Fecal Incontinence Severity Index (FISI) scores (mean, 95% CI) 0.28 0.20

4.0 (3.5–4.4) 4.6 (3.5–5.6) 4.3 (3.9–4.7) 4.6 (4.3–4.9)

Stool consistency, Bristol Stool Form Scale 0.99 0.12

 Hard, type 1–2 94.2 (82.6–98.2) 4.6 (1.3–15.2) 60.6 (54.7–66.2) 39.4 (33.8–45.3)

 Normal, type 3–5 95.5 (94.0–96.6) 4.6 (3.3–6.3) 63.3 (60.7–65.9) 36.7 (34.2–39.3)

 Loose, type 6–7 95.9 (89.6–98.4) 4.2 (1.3–12.9) 56.7 (49.1–63.9) 43.3 (36.1–50.9)

Vaginal delivery 0.13

 None NA NA 57.2 (50.3–63.9) 42.8 (36.1–40.6)

 1 or more NA NA 63.3 (59.5–66.9) 36.8 (33.1–40.6)

Hysterectomy 0.60

 No NA NA 62.5 (59.9–65.0) 37.5 (35.0–40.1)

 Yes NA NA 63.5 (59.5–67.3) 36.5 (32.7–40.5)

BMI, body mass index; CI, confidence interval; NA, not applicable; NHANES, National Health and Nutrition Examination Survey.

a

Proportion (95% CI) unless noted.

b

Based upon a PHQ-9 score of ≥10.