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Table 1 Characteristics of the study population according to quintiles of waist circumference

From: Waist circumference and waist-to-height ratio are associated with periodontal pocketing—results of the Health 2000 Survey

  Waist circumference
  Total n = 1287 I quintile n = 266 (lowest) II quintile n = 255 III quintile n = 236 IV quintile n = 266 V quintile n = 264 (highest)
Sociodemographic variables
 Gender, proportion of males, % 42.5 42.4 42.6 41.0 43.9 42.2
 Age, mean (± SD) 39.6 (±5.7) 37.5 (±5.2) 39.3 (±5.6) 39.0 (±5.9) 41.2 (±5.3) 40.9 (±5.7)
Education
 Low, % 11.9 7.8 12.4 10.0 13.3 15.7
 Intermediate, % 36.9 29.7 32.2 42.3 38.7 41.9
 High, % 51.2 62.5 55.4 47.7 48.0 42.3
Dental variables
Number of teeth
 Mean (± SD) 27.1 (±3.9) 28.0 (±3.1) 27.1 (±4.2) 27.5 (±3.1) 26.9 (±3.9) 26.3 (±4.8)
 Median (interquartile range) 28 (3) 28 (3) 28 (2) 28 (2) 28 (2) 28 (4)
 Min, max 1, 32 4, 32 1, 32 9, 32 6, 32 3, 32
Number of teeth with periodontal pockets ≥ 4 mm
 Mean (± SD) 2.6 (±4.0) 1.8 (±2.9) 2.5 (±3.7) 2.2 (±3.5) 2.7 (±4.0) 3.6 (±5.2)
 Median (interquartile range) 1 (3) 1 (3) 1 (4) 1 (3) 1 (4) 1 (5)
 Min, max 0, 28 0, 14 0, 25 0, 20 0, 26 0, 28
Number of teeth with periodontal pockets ≥ 6 mm
 Mean (± SD) 0.2 (±1.2) 0.1 (±0.5) 0.1 (±0.5) 0.1 (±0.7) 0.2 (±0.9) 0.5 (±2.4)
 Median (interquartile range) 0.00 (0) 0.00 (0) 0.00 (0) 0.00 (0) 0.00 (0) 0.00 (0)
 Min, max 0, 26 0, 4 0, 7 0, 7 0, 9 0, 26
Dental plaque
 No dental plaque, % 40.7 46.1 43.1 46.3 38.9 29.8
 Dental plaque at the gingival margins, % 50.2 46.7 48.4 45.9 52.9 56.5
 Dental plaque also elsewhere, % 9.1 7.2 8.4 7.8 8.1 13.6
Dental visits
 Regular check-ups, % 69.0 75.1 71.0 70.9 67.7 60.3
 Irregular, % 31.0 24.9 29.0 29.1 32.3 39.7
Toothbrushing
 At least twice a day, % 68.7 78.2 71.9 64.8 71.6 56.2
 Daily, % 27.1 18.3 26.9 31.7 24.1 35.3
 Less often, % 4.2 3.4 1.2 3.5 4.2 8.5
 Alcohol consumption, mean (± SD) 60.3 (±97.7) 44.2 (±58.7) 66.1 (±97.7) 56.8 (±94.9) 67.0 (±101.6) 67.5 (±123.1)
 BMI, mean (± SD) 25.7 (±4.4) 21.5 (±1.8) 23.4 (±1.9) 24.9 (±1.7) 26.6 (±2.0) 31.9 (±4.2)
 Lipid-lowering medication, % 1.2 0.0 0.8 1.3 1.5 2.6