Alarm status by arm and time period
| Arm | Full Education | Practice | Current Norm | Total |
|---|---|---|---|---|
| At enrolment | ||||
| Total Homes Enrolled | 130 | 53 | 141 | 324 |
| Number of homes with no working alarm pre | 42 | 15 | 31 | 88 |
| Number of homes with some working alarms pre | 88 | 38 | 110 | 236 |
| Percentage without any working alarms pre (95%CI) | 32.3% (24.2 to 40.4) | 28.3% (16.0 to 40.6) | 22.0% (15.1 to 28.9) | 27.2% (22.3 to 32.0) |
| Mean number of alarms working on arrival at home (95%CI) | 1.18 (0.98 to 1.18) | 1.30 (0.98 to 1.62) | 1.43 (1.25 to 1.60) | 1.31 (1.18 to 1.43) |
| Mean number of alarms installed (SE) | 2.13 (0.09) | 2.10 (0.13) | 2.09 (0.09) | 2.10 (0.06) |
| At follow-up | ||||
| Number of homes with no working alarm post | 13 | 7 | 17 | 37 |
| Percentage without any working alarms post | 10.0% | 13.2% | 12.1% | 11.4% |
| Increase in per cent with working alarms | 22.3% | 15.1% | 9.9% | 15.8% |
| Percentage of decrease in homes without working alarms | 69.0% | 53.3% | 45.2% | 58.0% |
| Mean number of working alarms post | 2.06 | 2.00 | 1.89 | 1.96 |
| Increase in number of working alarms per home (95% CI) | 0.88 (0.66 to 1.11) | 0.70 (0.25 to 1.14) | 0.45 (0.24 to 0.66) | 0.65 (0.50 to 0.80) |
| Percentage of increase in number of working alarms | 42.9% | 34.9% | 23.7% | 33.2% |
| Mean time to follow-up (and SE) | 721 (22) | 867 (39) | 646 (17) | 715 (14) |
| Method operability determined at follow-up | ||||
| Homes where alarms were tested at follow-up | 117 | 49 | 130 | |
| Resident report of alarm operability only | 13 | 4 | 11 | |
| Per cent tested | 90.0% | 92.5% | 92.2% | |
Working alarms are hard-wired or have working batteries.