Table 2.
Main result: ITT-analyses of response rates
| 1. Outcome (45 day RR.) | 2. Outcome (365 day RR.) | |||||||
|---|---|---|---|---|---|---|---|---|
| Resp | Non-Resp | Total | RR | Resp | Non-Resp | Total | RR | |
| IG | 45 | 60a | 105 | 42.9 % | 48 | 57 | 105 | 45.7 % |
| CG | 30 | 82 | 112 | 26.8 % | 32 | 80 | 112 | 28.6 % |
| Total | 75 | 142 | 217b | 80 | 137 | 217 | ||
| Test | p | OR [95 % CI]: | ΔRR | p | OR [95 % CI]: | ΔRR | ||
| Mid-p | 0.014 | 2.040 [1.157, 3.639] | 16.1 % | 0.009 | 2.095 [1.197,3.707] | 17.1 % | ||
| Fisher’s | 0.015 | 0.011 | ||||||
| χ 2 | 0.013 | 0.009 | ||||||
The table contains the 2x2-contingency tables w.r.t. 1. and 2. outcomes, with total figures for respondents (Resp) and non-respondents (Non-Resp) in the intervention- and control groups. Response rates (RR) for the two study arms are also provided. Below the contingency tables we report the OR with 95 % CI’s, the absolute difference in response rates (ΔRR), and the p-values from three standard 2-sided tests for effect provided by the oddsratio-function from the epitools-package for R (CI’s are computed w.r.t. the mid-p value)
aIncludes the 5 respondents who were successfully contacted, but refused participation in the questionnaire study
bOriginally 235 patients were included; 10 patients (7 from the IG and 3 from the CG) died before it was time to send them a questionnaire; 6 (3 in the IG and 3 in the CG) were discovered to be demented; 1 IG patient was discovered to have been mis-diagnosed with stroke, and one CG patient was discovered to have been mis-assessed as eligible. These 18 were excluded prior to analysis