Participation in basic survey | Gender† | 0⋅69* | 0⋅53 to 0⋅91 | 0⋅69* | 0⋅52 to 0⋅90 |
| Age (years) | 0⋅98** | 0⋅97 to 0⋅99 | 0⋅98** | 0⋅97 to 0⋅99 |
| Genetic analysis‡ | 0⋅77** | 0⋅68 to 0⋅88 | 0⋅76** | 0⋅67 to 0⋅86 |
Participation in blood sample preservation | Gender† | 0⋅68* | 0⋅52 to 0⋅88 | 0⋅67* | 0⋅51 to 0⋅87 |
for future use | Age (years) | 0⋅98** | 0⋅97 to 0⋅99 | 0⋅98** | 0⋅97 to 0⋅99 |
| Genetic analysis‡ | 0⋅77** | 0⋅68 to 0⋅87 | 0⋅76** | 0⋅67 to 0⋅85 |
Participation in examination of medical | Gender† | 0⋅64* | 0⋅50 to 0⋅83 | 0⋅63* | 0⋅49 to 0⋅82 |
records and death certificate | Age (years) | 0⋅98** | 0⋅97 to 0⋅99 | 0⋅98** | 0⋅97 to 0⋅99 |
| Genetic analysis‡ | 0⋅62** | 0⋅49 to 0⋅78 | 0⋅60** | 0⋅48 to 0⋅76 |