Table 2 Participation in five previous Tromsø Studies, 1974 to 2001
From: Sleep disturbances in an arctic population: The Tromsø Study
No. invited | No. attending | Attendance (%) | ||||||
|---|---|---|---|---|---|---|---|---|
Study | Year | Year of birth | Men | Women | Men | Women | Men | Women |
Tromsø I | 1974 | 1927–1956 | 8 867 | 6 595 | 83 | |||
Tromsø II | 1979–1980 | 1925–19591 | 11 481 | 9 959 | 8 477 | 8 144 | 73.8 | 81.8 |
Tromsø III | 1986–1987 | 1925–19661 | 14 539 | 12 877 | 10 413 | 10 189 | 71.6 | 79.1 |
Tromsø IV | 1994–1995 | <1970 | 18 480 | 19 078 | 12 865 | 14 293 | 69.6 | 74.9 |
Tromsø V | 2001 | <19722 | 4 636 | 5 717 | 3 511 | 4 619 | 75.7 | 80.8 |