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Table 1 General characteristics of participants

From: Analysis of the relationship between periodontitis and osteoporosis/fractures: a cross-sectional study

Characteristics Total participants P value
Periodontitis Control
Age (mean ± SD) 54.8 ± 7.9 53.0 ± 8.3  < 0.001*
Sex (n, %)     < 0.001
 Men 3852 (38.6) 43,409 (34.6)  
 Women 6117 (61.4) 81,915 (65.4)  
BMI (mean ± SD: kg/m2) 24.0 ± 2.9 23.9 ± 2.9  < 0.001*
Income (n, %)     < 0.001
 Missing, no response 766 (7.7) 10,854 (8.7)  
 Lowest 3435 (34.5) 35,590 (28.4)  
 Middle 3675 (36.9) 49,421 (39.4)  
 Highest 2093 (21.0) 29,459 (23.5)  
Smoking status (n, %)     < 0.001
 Non-smoker 6685 (67.1) 91,121 (72.7)  
 Past smoker 1796 (18.0) 18,593 (14.8)  
 Current smoker 1488 (14.9) 15,610 (12.5)  
Alcohol consumption (n, %)     < 0.001
 Non-drinker 4784 (48.0) 64,037 (51.1)  
 Past drinker 475 (4.8) 4537 (3.6)  
Current drinker 4710 (47.2) 56,750 (45.3)  
Nutritional intake (mean ± SD)    
 Total calories (kcal/d) 1760.1 ± 580.5 1749.4 ± 569.4 0.073
 Protein (g/d) 58.9 ± 26.6 59.8 ± 26.4 0.002*
 Fat (g/d) 27.5 ± 18.5 28.3 ± 18.2  < 0.001*
 Carbohydrate (g/d) 315.0 ± 95.2 310.0 ± 92.8  < 0.001*
 Calcium (mg/d) 446.3 ± 264.2 447.3 ± 266.1 0.712*
 Phosphorus (mg/d) 889.7 ± 369.5 896.4 ± 367.3 0.082*
 Potassium (mg/d) 2243.9 ± 1095.1 2253.7 ± 1075.8 0.380*
Osteoporosis (n, %) 1255 7867  < 0.001
Fracture (n, %) 1824 14,926  < 0.001
  1. SD, standard deviation; BMI, body mass index
  2. *Independent t test
  3. Chi-squared test