Table 3: Comparison of agreement by age group.

Chronic condition	Age; κ (95% CI)
	< 65 yr	65-75 yr
Diabetes	0.85 (0.77 to 0.91)	0.74 (0.62 to 0.86)
Hypertension	0.59 (0.52 to 0.65)	0.42 (0.30 to 0.53)
Thyroid disorder	0.60 (0.50 to 0.69)	0.58 (0.43 to 0.72)
Any cardiac disease	0.57 (0.46 to 0.67)	0.44 (0.29 to 0.57)
Cancer	0.52 (0.40 to 0.63)	0.52 (029 to 0.72)
Asthma	0.40 (0.29 to 0.50)	0.49 (0.26 to 0.69)
Arthrosis	0.26 (0.19 to 0.34)	0.26 (0.13 to 0.38)
Rheumatoid arthritis	0.38 (0.20 to 0.54)	0.08 (-0.05 to 0.32)
Osteoporosis	0.39 (0.24 to 0.55)	0.12 (-0.03 to 0.33)
Chronic obstructive pulmonary disease	0.22 (0.07 to 0.37)	0.25 (0.03 to 0.47)
Intestinal disease	0.20 (0.09 to 0.31)	0.19 (0.01 to 0.38)
Hypercholesterolemia	0.05 (0.01 to 0.09)	0.04 (0.00 to 0.08)

Note: CI = confidence interval.