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Table 2 Responses to the self-reported oral health (SROH) questionnaire, and their individual, unadjusted associations with periodontitis

From: A rapid, non-invasive tool for periodontitis screening in a medical care setting

Self-reported oral health item Response, n (%) Individual unadjusted odds ratio [95% CI]
Total periodontitis (moderate or severe) p-value Severe periodontitis p-value
Q1. Gum disease      
 Yesb 54 (34.6) 3.483 [1.553–7.813] 0.002* 3.769 [1.775–8.000] < 0.001*
 No 86 (55.1)     
 Don’t Knowa 15 (9.6)     
 Missinga 1 (0.6)     
Q2. Own teeth/gum health      
 Poorc 38 (24.4) 6.457 [3.087–13.502] < 0.001* 4.607 [1.974–10.751] < 0.001*
 Fairc 61 (39.1)     
 Good 44 (28.2)     
 Very good 10 (6.4)     
 Excellent 2 (1.3)     
 Don’t Knowa 1 (0.6)     
Q3. Gum treatment
 Yesb 26 (16.7) 4.658 [1.327–16.348] 0.010* 4.558 [1.883–11.032] < 0.001*
 No 127 (81.4)     
 Don’t Knowa 3 (1.9)     
Q4. Loose teeth
 Yesb 38 (24.4) 12.783 [2.938–55.606] < 0.001* 4.929 [2.267–10.714] < 0.001*
 No 118 (75.6)     
Q5. Bone loss
 Yesb 17 (10.9) 9.195 [1.184–71.430] 0.011* 3.590 [1.276–10.103] 0.011*
 No 137 (87.8)     
 Don’t Knowa 2 (1.3)     
Q6. Tooth appearance
 Yesb 57 (36.5) 2.108 [1.006–4.417] 0.046* 2.483 [1.244–4.954] 0.009*
 No 99 (63.5)     
Q7. Floss use
 1–7 days/wk.b 115 (73.8) 1.837 [0.871–3.872] 0.108* 1.406 [0.636–3.108] 0.398
 Never 40 (25.6)     
 Missinga 1 (0.6)     
Q8. Mouthwash use
 1–7 days/wk.b 51 (32.7) 1.658 [0.787–3.492] 0.181* 1.988 [0.987–4.004] 0.053*
 Never 105 (67.3)     
  1. aThe response ‘Don’t know’ and missing values were excluded for further analysis, similar to Eke et al. [14]
  2. p-values from chi-square tests
  3. breference category
  4. cCombined reference category, according to Eke et al. [14]
  5. *sufficing the cut-off p-value ≤0.20, making the predictor suitable for binary logistic regression modelling