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Table 1 Baseline characteristics in participants with complete data sets and participants for whom we imputed data

From: Reversible predictors of reversion from mild cognitive impairment to normal cognition: a 4-year longitudinal study

  Participants with complete data (n = 743) Participants with imputed data (n = 37,893)
Age (years)* 71.8 (5.2) 71.8 (5.2)
Sex (% male) 53.8 53.8
Education (years)* 11.3 (2.5) 11.3 (2.5)
Current smoking (% yes) 10.6 10.6
Heart disease (% yes) 17.5 17.5
Pulmonary disease (% yes) 8.7 8.7
Hypertension (% yes) 47.5 47.5
Diabetes mellitus (% yes) 15.1 15.1
Walking speed (m/s)* 1.2 (0.2) 1.2 (0.2)
Mini-mental state examination (points)* 26.5 (1.8) 26.5 (1.8)
Geriatric depression scale (points)* 3.1 (2.6) 3.1 (2.6)
Category of MCI (% yes)
 Amnestic MCI single domain 14.3 14.3
 Non-amnestic MCI single domain 62.2 62.2
 Amnestic MCI multiple domain 6.7 6.7
 Non-amnestic MCI multiple domain 16.8 16.8
Instrumental activities of daily living (% yes)
 Going outdoors using bus and train 89.3 89.3
 Cash handling and banking 88.6 88.6
 Driving a car 67.5 67.5
 Using map to go unfamiliar place 57.9 57.9
Cognitive activity (% yes)
 Reading of book or newspaper 94.1 94.1
 Cognitive stimulation such as board game and learning 44.2 44.2
 Culture lesson 39.4 39.4
 Using personal computer 28 26.8
Social activity (% yes)
 Daily conversation 95.4 95.4
 Giving someone a helping hand 89.7 89.7
 Attending a meeting in the community 52.4 52.4
 Hobby or sports activity 69.4 69.4
Productive activity (% yes)
 Housecleaning 87.7 87.7
 Field work or gardening 72.9 72.9
 Taking care of grandchild or pet 54.4 54.4
 Working 30.4 30.4
  1. *Mean (standard deviation)