Table 2.

Spearman correlation coefficients between dust weight levels across sampled sites, from the NSLAH, 1998–1999 (all p-values < 0.0001).

Location	BR bed	BR floor	LR floor	LR sofa/chair	Kitchen floor	House mean
BR floor	0.37	—	—	—	—	—
LR floor	0.38	0.58	—	—	—	—
LR sofa	0.38	0.35	0.38	—	—	—
Kitchen floor	0.30	0.40	0.44	0.31	—	—
House mean	0.66	0.75	0.77	0.67	0.67	—
House maximum	0.55	0.70	0.71	0.59	0.53	0.84

Abbreviations: BR, bedroom; LR, living room.