Table 1 Demographic characteristics of the subjects responding to a questionnaire, Japan, 2010
Characteristics | Men (N = 4441) | Women (N = 6705) |
|---|---|---|
Mean age (SD) | 76.13 (6.93) | 77.31 (7.54) |
Educational attainment (%) | Â | Â |
  Junior high school | 2092 (47.11) | 2927 (43.65) |
  High school | 1721 (38.75) | 2816 (42.00) |
  Some college or more | 453 (10.20) | 518 (7.73) |
  Missing | 175 (3.94) | 444 (6.62) |
Smoking (%) | Â | Â |
  Never/former | 3487 (78.52) | 5988 (89.31) |
  Current | 765 (17.23) | 104 (1.55) |
  Missing | 189 (4.26) | 613 (9.14) |
Alcohol consumption (%) | Â | Â |
  None | 1470 (33.10) | 4817 (71.84) |
  1-3 times/month | 510 (11.48) | 749 (11.17) |
  1-6 times/week | 957 (21.55) | 566 (8.44) |
  Everyday | 1451 (32.67) | 195 (2.91) |
  Missing | 53 (1.19) | 378 (5.64) |
Body mass index (%) | Â | Â |
  <25 kg/m2 | 3534 (79.58) | 5202 (77.58) |
  ≥25 kg/m2 | 740 (16.66) | 1106 (16.50) |
  Missing | 167 (3.76) | 397 (5.92) |
Live alone (%) | Â | Â |
  Yes | 473 (10.65) | 1,404 (20.94) |
  No | 3798 (85.52) | 4958 (73.94) |
  Missing | 170 (3.83) | 343 (5.12) |
Type-D personality (%) | Â | Â |
  Yes | 1853 (41.72) | 2674 (39.88) |
  No | 2138 (48.14) | 3084 (46.00) |
  Missing | 450 (10.13) | 947 (14.12) |
Self-rated health (%) | Â | Â |
  Good health | 3111 (70.05) | 4731 (70.56) |
  Poor health | 1330 (29.95) | 1974 (29.44) |