Trends in age-adjusted and sex-adjusted incidence of sudden cardiac death per 100 000 person-years (and 95% CIs) among men and women aged 30–84 years in four Japanese communities from 1981 to 2005
| 1981–1985 | 1986–1990 | 1991–1995 | 1996–2000 | 2001–2005 | p for trend | |
| Total | ||||||
| Population | 31 754 | 34 686 | 36 717 | 38 698 | 40 519 | |
| Cases | 114 | 101 | 83 | 76 | 97 | |
| Age-adjusted and sex-adjusted incidence | 76.0 (44.8 to 107.2) | 57.9 (32.7 to 83.1) | 39.3 (20.3 to 58.3) | 31.6 (15.6 to 47.6) | 36.8 (19.8 to 53.8) | <0.01 |
| Age-adjusted and sex-adjusted incidence | ||||||
| 30–64 years | 24.1 (4.8 to 43.4) | 19.7 (3.3 to 36.1) | 15.7 (1.8 to 29.6) | 12.4 (0.7 to 24.1) | 17.0 (2.5 to 31.5) | 0.266 |
| 65–74 years | 217.1 (64.9 to 369.3) | 100.2 (1.7 to 198.7) | 99.7 (8.6 to 190.8) | 83.8 (8.9 to 158.7) | 101.8 (24.1 to 179.5) | <0.01 |
| 75–84 years | 541.0 (187.9 to 894.1) | 527.2 (210.6 to 843.8) | 258.5 (67.2 to 449.8) | 204.3 (39.5 to 369.1) | 190.8 (51.1 to 330.5) | <0.01 |
| 40–74 years | 65.0 (29.9 to 100.1) | 40.0 (14.1 to 65.9) | 34.6 (12.2 to 57.0) | 28.8 (10.0 to 47.6) | 33.4 (13.5 to 53.3) | <0.01 |
| Men | ||||||
| Population | 15 048 | 16 471 | 17 421 | 18 422 | 19 306 | |
| Cases | 70 | 61 | 49 | 50 | 67 | |
| Age-adjusted incidence | 111.7 (53.1 to 170.3) | 82.1 (36.0 to 128.2) | 54.4 (20.2 to 88.6) | 49.3 (18.6 to 80.0) | 57.9 (26.2 to 89.6) | <0.01 |
| Women | ||||||
| Population | 16 706 | 18 215 | 19 296 | 20 276 | 21 213 | |
| Cases | 44 | 40 | 34 | 26 | 30 | |
| Age-adjusted incidence | 50.6 (17.1 to 84.1) | 39.5 (12.0 to 67.0) | 27.1 (6.3 to 47.9) | 16.7 (2.0 to 31.4) | 18.2 (2.5 to 33.9) | <0.01 |