Table 1 Descriptive statistics.
Transition in cognitive status | 2015–2016 | |||
|---|---|---|---|---|
Normal | MCI | Dementia | ||
2010–2011 | N (%) | 1226 (55.93%) | 821 (37.45%) | 145 (6.61%) |
Normal | 1374 (62.68%) | 1040 (75.69%) | 321 (23.36%) | 13 (0.95%) |
MCI | 734 (33.49%) | 184 (25.07%) | 470 (64.03%) | 80 (10.90%) |
Dementia | 84 (3.83%) | 2 (2.38%) | 30 (35.71%) | 52 (61.90%) |
Categorical variables | % | |||
Cognitive status | ||||
Worse cognitive status | 18.89% | |||
No qualitative change | 71.26% | |||
Better cognitive status | 9.85% | |||
Vigorous physical activity | ||||
No vigorous physical activity | 20.05% | |||
less than 1 time per month | 9.36% | |||
2–3 times per month | 8.90% | |||
1–2 times per week | 17.12% | |||
3–4 times per week | 21.55% | |||
5 or more times per week | 23.01% | |||
Smoking | ||||
Never smoked regularly | 43.20% | |||
Ever smoked regularly but no longer smoking | 45.16% | |||
Current smoker | 11.63% | |||
Drinking | ||||
Never drank | 14.87% | |||
Past drinking | 29.38% | |||
Current drinking (<4 days per week) | 40.15% | |||
Current drinking (≥4 days per week) | 15.60% | |||
Self-reported sleep quality | ||||
feel rested most of the time in the morning | 66.29% | |||
Number of close social ties | ||||
0–1 | 5.47% | |||
2–3 | 23.18% | |||
4–9 | 45.26% | |||
10–20 | 17.79% | |||
More than 20 | 8.30% | |||
Male | 44.98% | |||
Race and ethnicity | ||||
Whites | 72.90% | |||
non-Hispanic Blacks | 13.82% | |||
Hispanics | 10.90% | |||
Others | 2.37% | |||
Living arrangements | ||||
Living alone | 18.93% | |||
Living with spouse with or without others | 72.45% | |||
Other living arrangements | 8.62% | |||
Educational attainment | ||||
Below high school | 17.34% | |||
High school graduate | 24.41% | |||
Some college | 31.39% | |||
Bachelors or above | 26.87% | |||
Annual household income (USD) | ||||
0–24,999 | 26.87% | |||
25,000–49,999 | 26.60% | |||
50,000–99,999 | 31.89% | |||
100k or higher | 14.64% | |||
Continuous variables | Mean | [Min, Max] | ||
Age (years) | 71.56 | [62, 90] | ||
Cognitive status | ||||
CCFM total score (2010_11) | 25.32 | [10.11, 30] | ||
CCFM total score (2015_16) | 24.52 | [8.97, 30] | ||
Social factors in past year | ||||
Freq. of doing volunteer work | 2.24 | [0, 6] | ||
Freq. of attending group meetings | 2.75 | [0, 6] | ||
Freq. of socializing with friends or relatives | 4.36 | [0, 6] | ||
Freq. of attending religious services | 2.69 | [0, 5] | ||
