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Table 3 Baseline characteristics of participants stratified by age in the FORMEN baseline study, 2007-2008

From: Design and baseline characteristics of a prospective cohort study for determinants of osteoporotic fracture in community-dwelling elderly Japanese men: the Fujiwara-kyo Osteoporosis Risk in Men (FORMEN) Study

  All age groups 65-69 years 70-74 years 75-79 years 80 years and older P value a
Past history and present involvement of diseases (%)
   Thyroid diseases 1.4 1.3 1.3 0.7 3.9 0.0915
   Rheumatoid arthritis and connective tissue diseases 1.0 1.0 0.9 0.7 2.2 0.3419
   Diabetes mellitus 10.1 9.4 10.7 10.9 8.7 0.9221
   Asthma 1.2 1.6 0.7 1.3 1.3 0.7719
   Hypertension 33.3 30.2 35.0 35.6 31.7 0.2787
   Cerebrovascular diseases 3.7 2.6 2.8 6.4 3.9 0.0137
   Coronary heart disease 4.7 4.3 4.6 4.9 5.7 0.4090
   Malignant diseases 8.2 6.2 0.4 9.1 11.3 0.0115
   Prostate cancer 2.4 1.6 2.1 3.8 3.0 0.0391
   Steroid use 0.9 1.1 0.6 1.1 1.3 0.7588
   Statin use 4.9 4.8 5.4 3.1 7.0 0.8217
   Fragility fractures since age 50 4.4 1.2 4.4 4.9 4.4 0.7019
Lifestyle factors       
   Milk consumption (%)       
2 glasses/day or more 8.1 6.2 8.4 9.1 10.0 0.0088
1 glass/day 43.2 40.4 43.9 40.4 53.9  
Several glasses/week 15.2 16.6 15.5 16.2 8.7  
1 glass/week or less 33.5 36.7 32.3 34.2 27.4  
   Smoking status (%)       
Current smokers 17.0 21.9 17.3 14.3 7.9 <0.0001
Ex-smokers 61.4 56.6 59.8 65.1 71.9  
Non-smokers 21.7 21.5 23.0 20.8 20.2  
Number of pack-years in ever-smokers 41.1 ± 28.3 40.8 ± 28.5 43.2 ± 27.8 39.2 ± 27.8 39.9 ± 29.5 0.3908
   Alcohol drinking habit (%)       
Less than once/week 38.0 33.3 37.8 40.9 45.8 0.0218
1-2 times/week 5.3 5.3 4.7 5.8 6.2  
3-5 times/week 8.9 10.4 8.9 7.4 7.5  
6 times/week or more 47.9 51.0 48.6 45.9 40.5  
  1. Values represent mean ± SD, median with interquartile limits in parentheses, or proportion.
  2. a A trend of each variable with aging was tested by a linear regression-based trend test or Cochran-Armitage trend test. Chi-squared test was applied when a variable had more than two categories.