Study year stratum | Number of homes | SA originally installed | SA currently installed* | Missing SA* | SA working* |
---|---|---|---|---|---|
Year 2 | 196 | 563 | 497 (88.3%) | 66 (11.7%) | 470 (83.5%) |
Year 4 | 153 | 466 | 350 (75.1%) | 116 (24.9%) | 258 (55.4%) |
Year 6 | 151 | 352 | 250 (71.0%) | 102 (29.0%) | 96 (27.3%) |
Year 8 | 154 | 305 | 193 (63.3%) | 112 (36.7%) | 61 (20.0%) |
Year 10 | 146 | 198 | 108 (54.5%) | 90 (45.5%) | 44 (22.2%) |
Total | 800 | 1884 | 1398 (74.2%) | 486 (25.8%) | 929 (49.3%) |
*Percent of smoke alarms that had been originally installed through Operation Installation.