Table 1 Baseline sample characteristics of ELSA participants
Baseline characteristics | Â | Mortality | Â | ||||||
|---|---|---|---|---|---|---|---|---|---|
Total sample | No | Yes | Test statistics | ||||||
n = 7133 | n = 5355 (75.1%) | n = 1778 (24.9%) | |||||||
Mean/n | SD/% | Mean/n | SD/% | Mean/n | SD/% | t/x2 | df | p | |
Age (years) | 64.7 | 9.5 | 61.8 | 7.6 | 73.4 | 9.4 | -62.3 | 7131 | < 0.001 |
 Median (IQR) | 63.0 | 14.0 | 60.0 | 11.0 | 74.0 | 13.0 |  |  |  |
Sex | |||||||||
 Men | 3294 | 46.2 | 2361 | 44.1 | 933 | 52.5 | 37.78 | 1 | < 0.001 |
 Women | 3839 | 53.8 | 2994 | 55.9 | 845 | 47.5 |  |  |  |
Currently a smoker | 1152 | 16.2 | 801 | 15.0 | 351 | 19.8 | 22.4 | 1 | < 0.001 |
Accumulated wealth | |||||||||
 High | 2428 | 34.9 | 1987 | 38.1 | 441 | 25.1 | 151.9 | 2 | < 0.001 |
 Intermediate | 2137 | 30.7 | 1624 | 31.2 | 513 | 29.2 |  |  |  |
 Low | 2401 | 34.5 | 1598 | 30.7 | 803 | 45.7 |  |  |  |
Relationship status | |||||||||
 Not married | 2239 | 31.4 | 1447 | 27.0 | 792 | 44.5 | 190.3 | 1 | < 0.001 |
 Currently married | 4894 | 68.6 | 3908 | 73.0 | 986 | 55.5 |  |  |  |
Severe depressive symptoms | 998 | 14.0 | 673 | 12.6 | 325 | 18.4 | 37.1 | 1 | < 0.001 |
Frequent alcohol intake | 4341 | 64.7 | 3426 | 66.9 | 915 | 57.7 | 45.2 | 1 | < 0.001 |
Limiting longstanding illness | 3917 | 54.9 | 2692 | 50.3 | 1225 | 68.9 | 187.1 | 1 | < 0.001 |
Educational attainment years | 14 | 3.8 | 14.4 | 3.8 | 12.9 | 3.7 | 14.1 | 7131 | < 0.001 |
Survival time, month | 134.3 | 37.5 | 148.9 | 19.7 | 90.4 | 43.7 | 77.0 | 7131 | < 0.001 |
 Median (IQR) | 156.0 | 46.0 | 158.0 | 6.0 | 92.5 | 72.0 |  |  |  |
Length of follow-up, years | 11.2 | 3.1 | 12.4 | 1.6 | 7.5 | 3.6 | 77.0 | 7131 | < 0.001 |
 Median (IQR) | 13.0 | 3.8 | 13.2 | 0.5 | 7.7 | 6.0 |  |  |  |