Table 1 Characteristics of the study population (n = 948) in the Vitality 90+ Study
From: Longitudinal changes in mobility among nonagenarians: the Vitality 90+ Study
Cohort 2001 | Cohort 2003 | Cohort 2007 | |||||||
|---|---|---|---|---|---|---|---|---|---|
Men (n = 81) | Women (n = 387) | All (n = 468) | Men (n = 28) | Women (n = 113) | All (n = 141) | Men (n = 57) | Women (n = 282) | All (n = 339) | |
Age, median (IQR), years | 91 (90–92) | 91 (90–93) | 91 (90–93) | 90 (90–91) | 90 (90–91) | 90 (90–91) | 91 (90–92) | 91 (90–92) | 91 (90–92) |
Chronic conditions, median (IQR), number | 1 (0–2) | 1 (1–1) | 1 (1–2) | 1 (0–2) | 1 (0.5–2) | 1 (0–2) | 1 (1–2) | 2 (1–2) | 1 (1–2) |
Mobility score at baseline, median (IQR) | 11 (8–12) | 9 (6–11) | 9 (6–11) | 12 (11–12) | 11 (8–12) | 11 (9–12) | 11 (10–12) | 10 (7–11) | 10 (7–12) |
Respondent (%) | |||||||||
Participant | 91 | 79 | 81 | 96 | 92 | 93 | 97 | 88 | 89 |
Proxy | 6 | 21 | 18 | 4 | 8 | 7 | 3 | 12 | 10 |
Unknown | 3 | <1 | 1 | - | - | - | - | - | <1 |
Residence (%) | |||||||||
Community | 91 | 71 | 75 | 89 | 82 | 84 | 91 | 76 | 78 |
Institution | 8 | 29 | 25 | 11 | 18 | 16 | 9 | 24 | 22 |
Unknown | 1 | - | <1 | - | - | - | - | <1 | <1 |