Table 4.
Comparisons of Outcomes Between Intervention and Usual Care Groups.
| Outcomes | Intervention, n = 31, Mean (SD) | Usual Care, n = 30, Mean (SD) | F and P Values Using a Linear Mixed Effect Model |
|---|---|---|---|
| Short Sense of Competence Questionnaire | Increased SSCQ in the intervention group | ||
| Baseline | 18.8 (4.5) | 18.7 (5.5) | T: F = 0.37 P = .69 |
| 6 Months | 21.1 (6.3) | 17.4 (5.3) | G: F = 15.76 P < .001a |
| 12 Months | 24.1 (6.8) | 15.0 (6.0) | T × G: F = 13.94 P < .001 power 99% |
| Physical components score (PCS in SF-36) | Decline over time of PCS in both groups | ||
| Baseline | 42.2 (7.2) | 44.9 (8.5) | T: F = 5.71 P < .01a |
| 6 Months | 41.8 (7.6) | 41.8 (8.5) | G: F = 0.31 P = .58 |
| 12 Months | 41.1 (7.7) | 41.6 (8.7) | T × G: F = 2.68 P = .08 |
| Mental components score (MCS in SF-36) | Increased MCS in the intervention group | ||
| Baseline | 30.3 (5.3) | 27.3 (10.9) | T: F = 2.87 P = .06 |
| 6 Months | 37.1 (8.2) | 24.7 (10.1) | G: F = 29.72 P < .001a |
| 12 Months | 38.7 (7.0) | 23.0 (8.6) | T × G: F = 22.35 P < .001 power 99% |
| Severity of care recipient’s BPSD | Stable over time in both groups | ||
| Baseline | 8.9 (6.5) | 9.3 (5.9) | T: F = 0.009 P = .99 |
| 6 Months | 7.7 (5.3) | 10.4 (7.2) | G: F = 3.23 P = .08 |
| 12 Months | 7.3 (4.7) | 11.0 (6.7) | T × G: F = 2.15 P = .12 |
| Caregiver distress | Stable over time in both groups | ||
| Baseline | 10.8 (9.4) | 11.2 (9.3) | T: F = 1.60 P = .21 |
| 6 Months | 6.5 (6.7) | 11.9 (11.7) | G: F = 3.79 P = .05 |
| 12 Months | 6.3 (6.6) | 13.1 (11.9) | T × G: F = 4.97 P = .01 |
| Usage of respite care | Increased over time in both groups | ||
| Baseline | 1.6 (1.2) | 1.4 (1.0) | T: F = 21.13 P < .001a |
| 6 Months | 3.1 (0.9) | 1.6 (0.8) | G: F = 35.86 P < .001a |
| 12 Months | 3.5 (1.0) | 1.9 (1.1) | T × G: F = 10.53 P < .001 Power 99% |
| Satisfaction with service providers | Increased in intervention group and declined in usual care group | ||
| Baseline | 52.3 (21.1) | 49.8 (21.8) | T: F = 4.71 P = .01a |
| 6 Months | 64.1 (19.5) | 49.7 (19.0) | G: F = 12.56 P < .01a |
| 12 Months | 69.6 (12.8) | 44.4 (12.4) | T × G: F = 11.0 P < .001 Power 99% |
| Usage of community aged care | Increased over time in both groups | ||
| Baseline | 2.1 (1.4) | 2.0 (1.4) | T: F = 4.809 P = .01a |
| 6 Months | 2.5 (1.4) | 2.6 (1.5) | G: F = 0.099 P = .75 |
| 12 Months | 2.6 (1.4) | 2.8 (1.5) | T × G: F = 0.30 P = .74 |
Abbreviations: T, effect of time; G, effect of treatment on the intervention group; T × G, interaction effect of time and treatment; BPSD, behavioral and psychological symptoms of dementia; SD, standard deviation; SF-36, Short Form Health Survey; SSCQ, Short Sense of Competence Questionnaire.
a P value < 0.05.