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Hazard ratios (HRs) and confidence intervals (CIs) for the association between frequency of playing cards/mahjong and dementia, with rarely or never playing cards/mahjong as a reference group, by baseline sex, age, regular exercise, and MMSE score, adjusting for baseline age, sex, education, household income, marital status, smoking status, drinking status, exercise, BMI, living with family members, hypertension, diabetes, and MMSE score.
