Table 2.
Multilevel analyses for differences between control group (CG) and intervention group (IG) for primary outcome measures at 6, 12, and 24 months’ follow-up (n=310)
| Outcome | 6 months’ follow-up | 12 months’ follow-up | 24 months’ follow-up | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean (SD) | Mean difference* (95% CI); P value | Mean (SD) | Mean difference* (95% CI); P value | Mean (SD) | Mean difference* (95% CI); P value | ||||||
| CG | IG | CG | IG | CG | IG | ||||||
| GARS | 30.16 (10.07) | 32.83 (10.98) | 0.41 (−0.80 to 1.62); 0.51 | 30.81 (10.29) | 33.08 (11.34) | 0.47 (−0.81 to 1.76); 0.47 | 31.50 (10.92) | 34.39 (11.58) | 1.18 (−0.35 to 2.71); 0.35 | ||
| GARS ADL | 16.17 (5.13) | 17.54 (5.82) | 0.25 (−0.44 to 0.94); 0.48 | 16.30 (5.31) | 17.81 (5.90) | 0.59 (−0.14 to 1.33);0.11 | 16.73 (5.73) | 18.31 (5.82) | 0.77 (−0.05 to 1.59); 0.07 | ||
| GARS IADL | 14.00 (5.51) | 15.29 (5.92) | 0.17 (−0.63 to 0.97); 0.67 | 14.51 (5.69) | 15.28 (6.03) | −0.12 (−0.93 to 0.68); 0.76 | 14.77 (5.86) | 16.08 (6.35) | 0.40 (−0.54 to 1.34); 0.41 | ||
GARS=Groningen Activity Restriction Scale (range total scale 18-78; higher scores indicate more disability); GARS ADL=Groningen Activity Restriction Scale—activities of daily living (ADL) subscale (range total scale 11-44; higher scores indicate more disability); GARS IADL=Groningen Activity Restriction Scale—instrumental ADL subscale (range total scale 7-28; higher scores indicate more disability).
*Adjusted for age, sex, education, and significant differences at baseline (frailty and disability).