Table 1 Demographic data of enrolled participants
feature | total (n = 229) | group A (n = 70) | group B (n = 50) | group C (n = 49) | group D (n = 60) | |
|---|---|---|---|---|---|---|
sex | male | 92 | 26 | 26 | 11 | 29 |
female | 137 | 44 | 24 | 38 | 31 | |
age(yrs) | average | 60.7 ± 10.1 | 61.8 ± 9.91 | 61.6 ± 10.6 | 59.6 ± 10.9 | 59.5 ± 9.0 |
range | 41-86 | 43-85 | 41-86 | 42-83 | 41-83 | |
occupation | employed | 46 (20.1 %) | 17 | 9 | 9 | 11 |
unemployed | 12 (5.2 %) | 3 | 3 | 4 | 2 | |
retired | 171 (74.7 %) | 50 | 38 | 36 | 47 | |
education | primary school | 10 (4.4 %) | 3 | 2 | 1 | 4 |
junior middle school | 15 (6.5 %) | 4 | 4 | 4 | 3 | |
senior middle school | 163 (71.2 %) | 51 | 33 | 34 | 45 | |
university | 31 (13.5 %) | 4 | 10 | 9 | 8 | |
post-graduate | 10 (4.4 %) | 8 | 1 | 1 | 0 |