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Table 1 Characteristics of the study population stratified by interdental brush use

From: The use of an interdental brush mitigates periodontal health inequalities: the Korean National Health and nutrition examination survey (KNHANES)

Variables

Interdental brush use

P-value

Nonusers

Users

Unweighted N

Weighted % (95% CIs)

Unweighted N

Weighted % (95% CIs)

Age (Mean ± SD)

51.72 ± 16.99

 

46.67 ± 14.84

 

< 0.001

Sex

< 0.001

 Male

6,399

50.5 (49.6–51.3)

1,234

45.0 (43.1–47.0)

 

 Female

7,892

49.5 (48.7–50.4)

2,058

55.0 (53.0–56.9)

Education

  ≤ Elemental school

4,002

21.8 (20.8–22.8)

477

11.3 (10.2–12.6)

< 0.001

 Middle school

1,970

13.6 (12.9–14.4)

311

8.3 (7.3–9.3)

 High school

4,151

34.6 (33.4–35.7)

1,138

37.7 (35.6–39.8)

  ≥ University or college

3,621

 

1,245

37.7 (35.6–39.8)

Income

 Low

3,566

25.7 (24.3–27.1)

687

21.4 (19.6–23.4)

< 0.001

 Middle low

3,619

25.5 (24.3–26.8)

788

24.8 (22.8–26.8)

 Middle high

3,576

24.5 (23.3–25.8)

850

25.8 (23.9–27.9)

 High

3,455

24.3 (22.7–25.9)

952

28.0 (25.7–30.5)

Smoking

0.883

 Everyday

2,481

21 (20.1–21.9)

544

20.8 (19–22.6)

 Occasionally

2,637

18.1 (17.4–18.9)

563

17.8 (16.3–19.4)

 Never

9,170

60.9 (60–61.8)

2,184

61.4 (59.4–63.4)

Flossinga

< 0.001

 No

11,753

81.2 (80.3–82.1)

2,389

71.6 (69.6–73.5)

 Yes

2,538

18.8 (17.9–19.7)

903

28.4 (26.5–30.4)

Daily Toothbrushing

0.013

 No

289

1.7 (1.5–1.9)

40

1.0 (0.7–1.5)

 Yes

13,998

98.3 (98.1–98.5)

3,252

99.0 (98.5–99.3)

Dental clinic visitingb

< 0.001

 No

7,431

52.9 (51.8–54.1)

1,369

43.4 (41.3–45.4)

 

 Yes

6,850

47 (45.9–48.2)

1,923

56.6 (54.6–58.7)

Diabetesc

< 0.001

 Normal

7,244

68.4 (67.3–69.6)

1,950

72.3 (70.3–74.2)

 Impaired fasting glucose

2,563

22.0 (21.0–23.0)

591

20.8 (19.1–22.6)

 Diabetes

1,320

9.6 (8.9–10.3)

246

6.9 (6–8)

Hypercholesterolemiad

0.840

 Normal

9,238

85.7 (84.9–86.4)

2,320

85.8 (84.3–87.2)

 Abnormal

1,832

14.3 (13.6–15.1)

468

14.2 (12.8–15.7)

Hypertensione

< 0.001

 Normal

5,530

50.3 (49–51.6)

1,589

56.3 (54.1–58.5)

 Prehypertension

2,856

23.5 (22.5–24.5)

682

23.9 (22.1–25.8)

 Hypertension

3,967

26.2 (25.2–27.3)

718

19.8 (18.2–21.5)

BMI relatedf

0.695

 Underweight

548

4.8 (4.3–5.2)

135

4.8 (4.0–5.8)

 Normal

8,026

63.0 (62.0–64.0)

1,940

62.0 (60.0–64.0)

 Obese

4,166

32.2 (31.3–33.2)

1,012

33.1 (31.2–35.2)

Periodontitisg

0.001

 Normal

8,967

73.6 (72.2–74.9)

2,231

76.1 (73.7–78.3)

 Periodontitis

3,714

26.4 (25.1–27.8)

772

23.9 (21.7–26.3)

  1. aFlossing was used usually
  2. bDental clinic visit within a year
  3. cImpaired fasting glucose was defined by 100 mg/dL ≤ Fasting blood glucose<126 mg/dL and diabetes was defined by fasting blood glucose≥126 mg/dL or drug or insulin
  4. dHypercholesterolemia was defined by total cholesterol≥240 mg/dL or drug
  5. ePrehypertension was defined by 140 mmHg>Systolic blood pressure ≥ 130 mmHg or 90 mmHg>diastolic blood pressure ≥ 85 mmHg and hypertension was defined systolic blood pressure ≥ 140 mmHg or diastolic blood pressure ≥ 90 mmHg or drug
  6. fUnderweighted was defined by BMI<18.5 and obese was defined by BMI ≥ 25
  7. gPeriodontitis was defined community periodontal index codes 3, 4
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BMC Oral Health

ISSN: 1472-6831

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