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Table 1 Characteristics of study participants stratified by ethnic affiliation

From: Periodontal health in an indigenous Sámi population in Northern Norway: a cross-sectional study

 

Total

n (%)

Sámi

n (%)

Non-Sámi

n (%)

P value*

Internal loss

n (%)

Participants

2078 (100%)

1381 (66.5)

697 (33.5)

  

Age

   

< 0.001

0 (0)

 18–34

419 (20.1)

313 (22.7)a

106 (15.2)b

  

 35–49

687 (33.1)

435 (31.5)a

252 (36.2)b

  

 50–64

709 (34.1)

468 (33.9)

241 (34.6)

  

 65–75

263 (12.7)

165 (11.9)

98 (14.1)

  

Sex

   

0.155

0 (0)

 Men

894 (43.0)

579 (41.9)

315 (45.2)

  

 Women

1184 (57.0)

802 (58.1)

382 (54.8)

  

Household income

   

0.035

104 (5.0)

  < 300,000

276 (14.0)

184 (13.3)

92 (13.2)

  

 300,001-600,000

792 (40.1)

547 (39.6) a

245 (35.2)b

  

 600,001-900,000

615 (31.2)

400 (29.0)

215 (30.9)

  

  > 900,001

291 (14.7)

174 (12.6) a

117 (16.8)b

  

Education

   

< 0.001

69 (3.3)

 1–9 years

242 (12.0)

178 (13.4) a

64 (9.3)b

  

 10–13 years

781 (38.9)

462 (34.9) a

319 (46.6)b

  

  ≥ 14 years

986 (49.1)

684 (51.7)a

302 (44.1)b

  

Smoking

   

0.198

28 (1.3)

 Yes

443 (21.3)

283 (20.5)

160 (23.0)

  

 No

1607 (77.3)

1079 (78.1)

528 (75.8)

  

Toothbrushing frequency

   

< 0.001

3 (0.1)

  < 1 time/day

175 (8.4)

142 (10.3) a

33 (4.7)b

  

 1 time/day

631 (30.4)

462 (33.5) a

169 (24.3)b

  

  ≥ 2 times/day

1269 (61.2)

775 (56.1) a

494 (70.9)b

  

Dental attendance

   

0.004

20 (1.0)

 Yearly

1150 (55.3)

729 (52.8) a

421 (60.4)b

  

 Every other year

721 (34.7)

501 (36.3) a

220 (31.6)b

  

 Seldom

187 (9.0)

136 (9.9)

51 (7.3)

  
  1. *P-value for differences between groups using the χ2 test. When numbers in columns do not equal n or 100%, there is an internal drop out in background data. Different superscript letters denotes significant differences in periodontitis prevalence between characteristics (row proportions) at the 0.05 level