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Table 2 Adjusted association of salivary flow rate with cognitive impairment (n = 649)

From: Salivary flow rate and the risk of cognitive impairment among Korean elders: a cross-sectional study

Variables OR (95% Confidence Interval) p-value
Salivary flow rate   0.02
Normal (≥ 0.3 mL/min) 1  
Low (< 0.3 mL/min) 1.45 (1.05–2.11)  
Denture status   0.5
 Dentate 1  
 Denture 1.13 (0.80–1.61)  
Age (year) 1.01 (0.98–1.05) 0.4
Sex   0.4
 Male 1  
 Female 0.80 (0.50–1.31)  
Education level   < 0.001
 Junior school or less 1  
 High school or higher 0.43 (0.27–0.67)  
Smokinga   0.1
 No 1  
 Yes 0.67 (0.40–1.10)  
Drinkingb   0.06
 No 1  
 Yes 0.71 (0.49–1.01)  
Diabetesc   0.02
 No 1  
 Yes 1.53 (1.07–2.20)  
Hypertensiond   0.04
 No 1  
 Yes 0.69 (0.50–0.97)  
Obesitye   0.02
 No 1  
 Yes 0.66 (0.46–0.93)  
  1. p-values were obtained by logistic regression adjusted for denture status, age, sex, education level, smoking, drinking, diabetes, hypertension, and obesity
  2. aSmoking: “No” refers to never smoked and “Yes” refers to past and current smoker
  3. bAlcohol intake: No refers to never drunken, and “Yes” refers to past and current drinker
  4. cDiabetes was determined as “Yes” if fasting plasma glucose > 126 mg/dL or HbA1C ≥ 6.5% or history of diabetes
  5. dHypertension was determined as “Yes” if systolic blood pressure ≥ 140 mmHg or diastolic blood pressure ≥ 90 mmHg or taking hypertension medication
  6. eObesity: Body mass index (kg/m2) ≥ 25