Outcome measure | Postal (n = 1296) | Telephone/online (n = 126) | RR [95% CI] | p |
---|---|---|---|---|
Proportion of missing data, n (%) | ||||
Neurosensory impairmentb | 0 (0.0) | 0 (0.0) | - | - |
Cognitive impairmenta | 149 (0.3) | 92 (2.1) | 6.35 [1.97 to 20.47] | 0.002 |
Proportion of missing data excluding online premature terminations, n (%) | ||||
Neurosensory impairment | 0 (0.0) | 0 (0.0) | - | - |
Cognitive impairment | 149 (0.3) | 24 (0.6) | 1.68 [0.25 to 11.27] | 0.59 |
Prevalence of adverse outcomes, n (%) | ||||
Neurosensory impairment | 30 (2.3) | 5 (4.0) | 1.71 [0.67 to 4.42] | 0.26 |
Cognitive impairment | 169 (13.3) | 13 (10.8) | 0.82 [0.46 to 1.44] | 0.48 |
Proportion of adverse outcomes adjusted for significant differences in response mode c | ||||
Neurosensory impairment | - | - | 1.91 [0.73, 4.99] | 0.19 |
Cognitive impairment | - | - | 0.82 [0.46, 1.44] | 0.40 |