Table 1 Baseline characteristics of cohort members (n = 20,133), number (N) and percentage (%).

From: Poor oral health and risk of incident myocardial infarction: A prospective cohort study of Swedish adults, 1973–2012

 

Number of teeth*

Dental plaque

0–1 N(%)

2–3 N(%)

4–5 N(%)

6 N(%)

Not accurate†

N (%)

No dental plaque

N (%)

Low dental plaque

N (%)

High dental plaque

N (%)

Total number

4,624 (23.0)

2,235 (11.1)

3,752 (18.6)

9,522 (47.3)

4,624 (23.0)

3,224 (16.0)

9,646 (47.9)

2,639 (13.1)

Age, years

Median

63.9

55.0

45.4

28.9

63.9

34.9

34.0

40.6

Percentile (25th−75th)

54.6–72.4

45.9–63.6

35.6–55.2

22.2–37.2

54.6–72.4

26.3–47.7

25.6–47.1

28.3–56.8

Sex

Male

1,970 (42.6)

1,139 (51.0)

1,876 (50.0)

4,930 (51.7)

1,970 (42.6)

1,082 (33.6)

4,949 (51.3)

1,914 (72.5)

Female

2,654 (57.4)

1,096 (49.0)

1,876 (50.0)

4,592 (48.2)

2,654 (57.4)

2,142 (66.4)

4,697 (48.7)

725 (27.5)

Smoking and snus use

Uses neither

2,429 (52.5)

1,046 (46.8)

1,685 (44.9)

4,203 (44.1)

2,429 (52.5)

1,572(48.8)

4,386 (45.5)

976 (37.0)

Smoker only

1,820 (39.4)

1,022 (45.8)

1,795 (47.8)

4,574 (48.0)

1,820 (39.4)

1,487 (46.1)

4,530 (47.0)

1,374 (52.1)

Snus user only

245 (5.3)

104 (4.7)

143 (3.8)

374 (3.9)

245 (5.3)

83 (2.6)

382 (4.0)

156 (5.9)

Uses both

130 (2.8)

62 (2.8)

129 (3.4)

371 (3.9)

130 (2.8)

81 (2.5)

348 (3.6)

133 (5.0)

Alcohol consumption

No/Low

1,828 (39.6)

594 (26.6)

735 (19.6)

1,374 (14.4)

1,828 (39.5)

514 (15.9)

1,654 (17.2)

535 (20.3)

Moderate/High

2,791 (60.4)

1,640 (73.4)

3,015 (80.4)

8,148 (85.6)

2,791 (60.4)

2,709 (84.0)

7,991 (82.8)

2,103 (79.7)

Area of residence in 1973/74

Small town

545 (11.8)

285 (12.8)

489 (13.0)

1,790 (18.8)

545 (11.8)

341 (10.6)

1,600 (16.6)

623 (23.6)

Rural

1,857 (40.1)

829 (37.1)

1,308 (34.9)

2,932 (30.8)

1,857 (40.2)

1,021 (31.7)

3,140 (32.6)

908 (34.4)

City

2,222 (48.1)

1,121 (50.2)

1,955 (52.1)

4,800 (50.4)

2,222 (48.1)

1,862 (57.8)

4,906 (50.9)

1,108 (42.0)

  1. *Number of teeth was assessed by examination of six reference teeth (tooth numbers 16, 21, 24, 36, 41, 44 using the Ramfjord teeth index). †The measurement of dental plaque for individuals with only 0 or 1 of the reference teeth present was considered to not be accurate.
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