Table 1.

Logic for unweighted allergen exposure composite

Self-report	Inspection	Objective measures
No working vacuum with HEPA filter = 1	Level of dust in room where participant spends the most time (none/slight = 0; moderate/heavy = 1)	Decile of max particulates scaled to 0–1
Endorses any inside, furry pet = 1	Anywhere in home: Any of the following—mold odour, carpet dampness, water damage, condensation, water leaks/drips present = 1	Decile of average relative humidity scaled to 0–1
Endorses any pest/rodent = 1	Anywhere in home: any evidence of cockroach, rodent, or crack/holes that would allow mice = 1
	Anywhere in home: any evidence of cigarette butts, ashtrays with ashes, or tobacco odour = 1
	Bathroom fan is not working or does not vent to outside = 1

Scores listed on table represent the value assigned to the variable before factor analysis