<qa>  What is the area of rooms obtained?Experimental Group: In homes of children randomized to the intervention arm of the trial, a comprehensive observational survey of living spaces will be undertaken. The study will examine living spaces to which a child may be exposed including 5 high-exposure, high-risk areas main activity room, kitchen, childs bedroom and bathrooms, and stairways. In addition to quantifying hazards, the area of rooms will be obtained allowing for determination of both the number and density of injury hazards. 