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Table 4 Relationship between having a leadership positions and dementia onset

From: An additive effect of leading role in the organization between social participation and dementia onset among Japanese older adults: the AGES cohort study

  Crude Adjusted
HR 95% CI HR 95% CI
Young-old(n = 9234)
 Regular-members reference   reference  
 Non-participants 1.38 1.15–1.64 1.22 1.02–1.46
 Leadership positions 0.76 0.61–0.94 0.81 0.65–0.999
Old-old(n = 4616)
 Regular-members reference   reference  
 Non-participants 1.30 1.15–1.48 0.99 0.86–1.13
 Leadership positions 0.86 0.72–1.02 0.98 0.83–1.14
  1. Adjusted for sex, age, educational attainment, marital status, living arrangement, occupational status, walking time, medical history, alcohol consumption, smoking, depression, and IADL