Table 2.
Longitudinal Association Between Self-rated Health and Transitions in Timed Gaita
| Unadjusted |
Adjusted Model 1 |
Adjusted Model 2 |
Adjusted Model 3 |
|
| Transitions | Odds ratio (95% CI) | Odds ratiob (95% CI) | Odds ratioc (95% CI) | Odds ratiod,e (95% CI) |
| Normal timed gait tof | ||||
| Normal timed gait | 1.00 | 1.00 | 1.00 | 1.00 |
| Slow timed gait | 2.22 (1.61–3.06) | 2.00 (1.44–2.79) | 1.78 (1.24–2.57) | 1.63 (1.13–2.37) |
| Death | 3.18 (1.81–5.56) | 3.19 (1.84–5.54) | 2.44 (1.36–4.38) | 2.22 (1.24–3.96) |
| Slow timed gait tog | ||||
| Slow timed gait | 1.00 | 1.00 | 1.00 | 1.00 |
| Normal timed gait | 0.80 (0.56–1.14) | 0.76 (0.52–1.12) | 0.86 (0.56–1.31) | 1.04 (0.68–1.60) |
| Death | 1.40 (0.98–1.99) | 1.60 (1.10–2.33) | 1.38 (0.90–2.10) | 1.32 (0.85–2.04) |
Notes: Longitudinal models utilized an exchangeable correlation structure and were performed using SUDAAN survey data analysis software, version 9.0. CI = confidence interval; MMSE = Mini-Mental State Examination.
Fair/Poor self-rated health compared with Excellent/Very Good/Good self-rated health (referent category).
Adjusted for demographic characteristics (age, gender, race, and education).
Adjusted for demographic characteristics, number of chronic conditions, MMSE score, and depression.
Adjusted for demographic characteristics, number of chronic conditions, MMSE score, depression, and activity of daily living score.
The adjusted Wald F-test statistic for the fully adjusted model in which normal timed gait to normal timed gait is the reference category is 7.90 (18 df; model minus intercept), p < .001. The adjusted Wald F-test statistic for the fully adjusted model in which slow timed gait to slow timed gait is the reference category is 8.47 (18 df; model minus intercept), p < .001.
Model includes participants who had normal timed gait at the beginning of an 18-month interval, with participants who had normal timed gait during the entire interval (i.e., at two consecutive 18-month time points) serving as the comparison group.
Model includes participants who had slow timed gait at the beginning of an 18-month interval, with participants who had slow timed gait during the entire interval (i.e., at two consecutive 18-month time points) serving as the comparison group.