Table 2.

Spearman's rank correlation, intra-class correlation and weighted kappa coefficients for the association of area-based and self-reported household incomes

	Census tract			Dissemination area
	rs	ICC (95%CI)	k (95%CI)	rs	ICC (95%CI)	k (95%CI)
Asthma	0.28	0.25 (0.13,0.35)	0.20 (0.13,0.27)	0.35	0.29 (0.17,0.39)	0.24 (0.16,0.32)
Rheumatoid Arthritis	0.23	0.13(-0.01,0.27)	0.13(0.02,0.23)	0.29	0.15 (0.03,0.28)	0.16(0.06,0.25)
Diabetes	0.35	0.26 (0.13,0.38)	0.27 (0.17,0.37)	0.33	0.27 (0.15,0.38)	0.23 (0.13,0.33)

r_s = Spearman's rank correlation

ICC(3,1) = Intra-class correlation coefficient (2-way mixed model, absolute agreement)

k = Weighted kappa coefficient