Table 1.
Baseline characteristics of included and excluded participants
| Included ( n = 11,486) |
Excluded (n = 1,398) |
p–value | ||||
|---|---|---|---|---|---|---|
| n | % | n | % | |||
| Age, years | ||||||
| mean±SD | 75.03±4.22 | 76.80±4.82 | <0.001 | |||
| 70 < 75 | 6,944 | 60 % | 602 | 43 % | <0.001 | |
| 75 < 80 | 2,950 | 26 % | 435 | 31 % | ||
| ≥ 80 | 1,592 | 14 % | 361 | 26 % | ||
| Gender | ||||||
| Female | 6,126 | 53 % | 880 | 63 % | <0.001 | |
| Male | 5,360 | 47 % | 518 | 37 % | ||
| Social Isolation | ||||||
| No | 11,262 | 98 % | n < 5 in a cell | 0.6 | ||
| Isolated | 224 | 2 % | ||||
| Social Support | ||||||
| High | 11,258 | 98 % | 1,067 | 98 % | 0.6 | |
| Low | 228 | 2 % | 19 | 2 % | ||
| Loneliness | ||||||
| No | 10,927 | 95 % | 1,313 | 94 % | 0.1 | |
| Lonely | 559 | 5 % | 82 | 6 % | ||
| Composite Social Health a | ||||||
| Positive | 10,576 | 92 % | n < 5 in a cell | 0.3 | ||
| Poor | 910 | 8 % | ||||
| Ethnicity | ||||||
| White/Caucasian | 11,345 | 99 % | 1,372 | 98 % | 0.09 | |
| Not | 136 | 1 % | 24 | 2 % | ||
| Education | ||||||
| ≤12 years | 6,701 | 58 % | 915 | 65 % | <0.001 | |
| >12 years | 4,785 | 42 % | 483 | 35 % | ||
| Region | ||||||
| Major city | 6,112 | 53 % | 719 | 52 % | 0.2 | |
| Inner regional | 4,060 | 35 % | 496 | 36 % | ||
| Outer regional/remote | 1,289 | 11 % | 176 | 13 % | ||
| Smoking Status | ||||||
| Current | 328 | 3 % | 30 | 2 % | 0.1 | |
| Former | 4,754 | 41 % | 553 | 40 % | ||
| Never | 6,404 | 56 % | 815 | 58 % | ||
| Number of CVD risk factors b | ||||||
| mean±SD | 2.00±1.03 | 2.03±1.00 | 0.3 | |||
| 0–1 | 3,713 | 32 % | 448 | 32 % | 0.2 | |
| 2 | 3,399 | 30 % | 388 | 28 % | ||
| 3–5 | 4,361 | 38 % | 560 | 40 % | ||
a The social health composite categories were defined as positive (not isolated, supported, and not lonely), or poor (isolated, not supported and/or lonely)
b Number of five CVD risk factors (current tobacco smoking, hypertension, antihypertensive drug use, dyslipidemia, diabetes)