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. 2020 Aug 3;25(4):1829–1837. doi: 10.1007/s00784-020-03485-0

Table 3.

Unadjusted associations between independent variables and oral hygiene

Variables Number of teeth with dental plaque (RR, CI 95%)a Toothbrushing less than twice a day (RR, CI 95%)a Plenty of dental plaque (RR, CI 95%)a
Gender
  Women 1.0 1.0 1.0
  Men 1.41 (1.29–1.55) 2.51 (2.15–2.92) 1.76 (1.05–2.06)
Married or equivalent relationship
  Yes 1.0 1.0 1.0
  No 1.09 (0.98–1.23) 1.29 (1.11–1.51) 1.05 (0.87–1.26)
Higher education (university or equivalent)
  Yes 1.0 1.0 1.0
  No 1.15 (1.02–1.30) 1.97 (1.61–2.39) 1.28 (1.06–1.55)
Current smoker
  No 1.0 1.0 1.0
  Yes 1.22 (1.10–1.36) 1.38 (1.19–1.60) 1.45 (1.24–1.71)
Moderate alcohol consumption riskb
  No 1.0 1.0 1.0
  Yes 1.22 (1.04–1.42) 1.13 (0.91–1.41) 1.46 (1.18–1.81)
Number of general diseases (continuous) 1.23 (1.04–1.44) 1.26 (1.07–1.49) 1.31 (1.16–1.48)
Diagnosed depression or depressive symptoms
  No 1.0 1.0 1.0
  Yes 1.08 (0.92–1.28) 0.99 (0.76–1.30) 1.12 (0.86–1.47)
Diagnosed psychosis
  No 1.0 1.0 1.0
  Yes 1.91 (1.45–2.52) 1.53 (1.02–2.29) 2.35 (1.72–3.23)
Using removable prothesis
  No 1.0 1.0 1.0
  Yes 1.99 (1.45–2.72) 1.99 (1.37–2.90) 2.87 (2.13–3.86)
Anticholinergic Activity Scale
  0 1.0 1.0 1.0
  ≥ 1 1.58 (1.24–2.02) 1.13 (0.84–1.52) 1.52 (1.17–1.97)
  Continuous 1.14 (1.06–1.21) 1.04 (0.94–1.14) 1.13 (1.04–1.22)
Anticholinergic Burden Classification
  0 1.0 1.0 1.0
  ≥ 1 1.29 (0.85–1.93) 1.19 (0.75–1.88) 1.74 (1.03–2.94)
  Continuous 1.09 (0.99–1.20) 1.04 (0.88–1.23) 1.15 (0.99–1.33)
Anticholinergic Cognitive Burden
  0 1.0 1.0 1.0
  ≥ 1 1.37 (1.09–1.71) 1.11 (0.85–1.46) 1.38 (1.06–1.79)
  Continuous 1.16 (1.09–1.24) 1.05 (0.95–1.16) 1.17 (1.08–1.27)
Anticholinergic Drug Scale
  0 1.0 1.0 1.0
  ≥ 1 1.32 (1.07–1.62) 1.14 (0.89–1.46) 1.29 (1.00–1.64)
  Continuous 1.13 (1.05–1.21) 1.06 (0.96–1.16) 1.13 (1.03–1.23)
Anticholinergic Load Scale
  0 1.0 1.0 1.0
  ≥ 1 1.25 (1.03–1.51) 1.13 (0.90–1.42) 1.26 (1.00–1.59)
  Continuous 1.08 (0.99–1.18) 1.04 (0.93–1.17) 1.07 (0.95–1.21)
Anticholinergic Risk Scale
  0 1.0 1.0 1.0
  ≥ 1 1.45 (1.09–1.92) 1.16 (0.83–1.62) 1.39 (1.01–1.93)
  Continuous 1.12 (1.09–1.23) 1.02 (0.88–1.17) 1.09 (0.96–1.24)
Chew’s scale
  0 1.0 1.0 1.0
  ≥ 1 1.51 (1.24–1.84) 1.22 (0.97–1.53) 1.46 (1.17–1.82)
  Continuous 1.11 (1.04–1.18) 1.05 (0.97–1.14) 1.09 (1.01–1.18)
Clinician-Rated Anticholinergic Scale
  0 1.0 1.0 1.0
  ≥ 1 1.32 (1.04–1.66) 1.15 (0.88–1.50) 1.33 (1.01–1.74)
  Continuous 1.13 (1.04–1.23) 1.02 (0.90–1.14) 1.12 (1.01–1.25)
Durán’s scale
  0 1.0 1.0 1.0
  ≥ 1 1.27 (1.03–1.58) 1.16 (0.90–1.50) 1.20 (0.92–1.57)
  Continuous 1.13 (1.03–1.25) 1.10 (0.98–1.24) 1.11 (0.97–1.27)

aData presented as a relative risk (RR) with 95% confidence intervals (CI 95%)

bModerate risk for alcohol consumption: ≥ 20 g of pure ethanol/day (women), ≥ 40 g of pure ethanol/day (men)