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Table 1 Baseline characteristics of the study population based on survival during the 12-year follow-up period

From: Association between tooth loss and orodigestive cancer mortality in an 80-year-old community-dwelling Japanese population: a 12-year prospective study

Characteristic Alive (n = 242) Died (n = 414) P value
Female 178 (73.6) 211 (50.9) < 0.001
Currently married 112 (46.3) 215 (51.9) 0.13
Place of residence    
   Urban 65 (26.9) 85 (20.5) < 0.001
   Suburban 101 (41.7) 176 (42.5)  
   Rural 76 (31.4) 153 (37.0)  
Medical examinations    
   Serum total cholesterol 214.5 (35.3) 199.6 (38.2) < 0.001
   Fasting serum glucose 115.1 (40.8) 126.1 (57.5) 0.01
   Serum albumin 4.3 (0.28) 4.2 (0.32) < 0.001
   Systolic blood pressure 150.9 (22.5) 149.7 (23.9) 0.53
   Body mass index 23.2 (3.1) 22.4 (3.4) 0.005
Dental examinations    
   Missing teeth 23.1 (9.2) 24.7 (8.5) 0.023
   Number of teeth    
   Edentulous 79 (32.6) 157 (37.9) 0.014
   1–9 teeth 65 (26.9) 117 (28.3)  
   10 – 19 teeth 56 (23.1) 87 (21.0)  
    ≥ 20 teeth 42 (17.4) 53 (12.8)  
Physical inactivity 3 (1.2) 43 (10.3) < 0.001
High alcohol consumption 37 (15.3) 82 (19.8) 0.24
Smokers 7 (2.9) 67 (16.2) < 0.001
Poor self-rated health 22 (9.0) 62 (14.9) 0.12
  1. Data indicate the number of subjects (%) or mean (standard deviation).
  2. Differences between groups were tested using a chi-square test for categorical variables and t-test for continuous variables.