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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)