Table 1.
Distribution of baseline variables of participants with an ISAR-PC score ≥ 2, by study arm (N = 2283).
Fig 1.
Flow of practices and participants through the trial.
Numbers do not add up because persons who did not return a questionnaire at 6 months (n = 119) could return a questionnaire at 12, 18 and/or 24 months. Eleven practices were randomized to the intervention group and 13 practices were randomized to the control group. In both groups around 35% of the invited persons were at increased risk of functional decline and participated in the study. In both groups the follow-up rates were around 77% and 76% after one and two years respectively.
Fig 2.
Effect of the intervention on disability (modified Katz-ADL index score).
The effect of the intervention was equal (-0.07) and very small across all follow-up times; The scale on the y-axis only ranges from 0 to 7.0 points on the modified Katz-ADL index score, which is a 15-point scale.
Table 2.
Primary results of trial: Mean scores and difference between intervention and control arm at 6, 12, 18 and 24 months.
Fig 3.
Effect of the intervention on secondary outcomes.
The effect of the intervention was small and statistically not significant for all secondary outcomes across all follow-up moments except for after-hours primary care were a small effect was found at six months. Note that the scales on the y-axis do not cover the full range of the measurement instrument.
Fig 4.
Kaplan Meier all-cause mortality for persons at increased risk of functional decline.
No difference was found in overall mortality between both study arms; Log rank test = 0.84; p = 0.36.