Mean number and density (number per 100 sq ft) of hazards for baseline home visit (BHV) and intervention planning visit (IPV) (n = 163)
| Mean | SD | |
| Number of hazards* | ||
| BHV (4 rooms) | 31.8 | 6.8 |
| IPV (4 rooms) | 37.0 | 6.3 |
| IPV (all rooms) | 81.4 | 23.2 |
| Density of hazards* | ||
| BHV (4 rooms) | 6.1 | 1.8 |
| IPV (4 rooms) | 7.1 | 1.8 |
| IPV (all rooms) | 6.4 | 2.3 |
| Number of hazards (stairs) | ||
| BHV | 4.0 | 2.0 |
| IPV | 3.4 | 1.9 |
*Paired t test between four rooms at BHV and IPV, p<0.0001.