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Table 1 Mortality rates by baseline characteristics (N=10,271)

From: Social participation and mortality: does social position in civic groups matter?

  n (%) Incidence/person year Incidence rate per 1000 person-years (95 % CI)
Age     
 65–69 3680 36 % 139/14,441 9.6 (8.2–11.4)
 70–74 3046 30 % 160/11,855 13.5 (11.6–15.7)
 75–79 2205 21 % 196/8446 23.2 (20.2–26.6)
 80–84 948 9 % 143/3510 40.7 (34.7–47.8)
 85 or older 392 4 % 115/1355 84.9 (71.3–101.1)
Sex     
 Female 5261 51 % 255/20,498 12.4 (11.0–14.1)
 Male 5010 49 % 498/19,108 26.1 (23.9–28.4)
Annual equivalized household income (JPY)     
 <19,999 3304 32 % 240/12,746 18.8 (16.6–21.3)
 20,000–39,999 3880 38 % 292/14,940 19.5 (17.4–21.9)
40,000 1023 10 % 55/3981 13.8 (10.6–18.0)
 Missing 2064 20 % 166/7939 20.9 (18.0–24.3)
Educational attainment     
 Less than 6 years 381 4 % 53/1418 37.4 (28.7–48.7)
 6–9 years 5298 52 % 411/20,435 20.1 (18.3–22.1)
 10–12 years 2964 29 % 175/11,494 15.2 (13.1–17.6)
 13 years and more 1002 10 % 61/3857 15.8 (12.3–20.3)
 Other 33 0 % 5/117 42.7 (18.1–100.7)
 Missing 593 6 % 48/2285 21.0 (15.9–27.8)
Marital status     
 Married and spouse is alive 6932 67 % 473/26,825 17.6 (16.1–19.3)
 Other 2670 26 % 220/10,213 21.5 (18.9–24.5)
 Missing 669 7 % 60/2568 23.4 (18.2–30.0)
Self-reported health     
 Very good 861 8 % 36/3377 10.7 (7.7–14.8)
 Good 6542 64 % 353/25,485 13.9 (12.5–15.4)
 Poor 2126 21 % 237/8057 29.4 (25.9–33.3)
 Very poor 438 4 % 101/1533 65.9 (54.6–79.6)
 Missing 304 3 % 26/1154 22.5 (15.4–32.9)
Self-reported physical function     
 Very good 1373 13 % 68/5372 12.7 (10.0–16.0)
 Good 6844 67 % 406/26,562 15.3 (13.9–16.8)
 Poor 1522 15 % 192/5721 33.6 (29.2–38.6)
 Very poor 329 3 % 69/1180 58.5 (46.5–73.5)
 Missing 203 2 % 18/771 23.3 (14.8–36.9)
Self-reported medical conditions     
 No illness 1707 17 % 67/6709 10.0 (7.9–12.7)
 Having illness but need no treatment 987 10 % 74/3817 19.4 (15.5–24.3)
 Having illness but discontinued treatment 627 6 % 37/2438 15.2 (11.0–20.9)
 Receiving some treatment 6323 62 % 537/24,210 22.2 (20.4–24.1)
 Missing 627 6 % 38/2433 15.6 (11.4–21.4)
Geriatric Depression Scale     
 Normal 6109 59 % 339/23,803 14.2 (12.8–15.8)
 Mildly depressed 1944 19 % 192/7387 26.0 (22.6–29.9)
 Severely depressed 348 3 % 49/1283 38.2 (29.0–50.3)
 Missing 1870 18 % 173/7133 24.3 (20.9–28.1)
Residence year     
 Less than 10 years 316 3 % 20/1205 16.6 (10.7–25.6)
 10–19 years 439 4 % 27/1670 16.2 (11.1–23.5)
 20–29 years 760 7 % 53/2926 18.1 (13.9–23.7)
 30–39 years 1237 12 % 67/4814 13.9 (11.0–17.7)
 40–49 years 1593 16 % 82/6207 13.2 (10.7–16.4)
 50 years and more 5648 55 % 473/21,713 21.8 (19.9–23.8)
 Missing 278 3 % 31/1072 28.9 (20.4–40.9)
Social participation     
 Regular position in the social organization(s) 5928 58 % 479/22,718 21.1 (19.3–23.0)
 Leadership position in one or more social organization(s) 3600 35 % 214/14,014 15.3 (13.4–17.4)
 Missing 743 7 % 60/2874 20.9 (16.3–26.8)