Table 2 Spearman's rank correlation, intra-class correlation and weighted kappa coefficients for the association of area-based and self-reported household incomes

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)