Table 5.

O/E ratios for the 10 most prevalent morbidity dyads and triads

Number of chronic conditions	Rank	Chronic conditions	O/E ratio
2	1	Chronic lung diseases and asthma	162.15
	2	Emotional, nervous, or psychiatric problems and memory-related disease	97.73
	3	dyslipidaemia and diabetes or high blood sugar	38.39
	4	Heart disease and memory-related disease	25.69
	5	Stroke and memory-related disease	23.66
	6	Hypertension and stroke	22.85
	7	Hypertension and diabetes or high blood sugar	20.64
	8	Cancer or malignant tumour and stroke	19.55
	9	Memory-related disease and asthma	19.55
	10	Stroke and asthma	19.55
3	1	Stroke, emotional, nervous, or psychiatric problems and memory-related disease	10 287.72
	2	Emotional, nervous, or psychiatric problems, memory-related disease and asthma	8498.56
	3	Emotional, nervous, or psychiatric problems, chronic lung diseases and asthma	2274.26
	4	Heart disease, stroke and memory-related disease	2253.50
	5	Chronic lung diseases, heart disease and asthma	1992.69
	6	Dyslipidaemia, heart disease and memory-related disease	1443.25
	7	Hypertension, dyslipidaemia and diabetes or high blood sugar	1398.31
	8	Hypertension, stroke and memory-related disease	1387.35
	9	Chronic lung diseases, memory-related disease and asthma	1376.53
	10	Chronic lung diseases, arthritis or rheumatism and asthma	1265.95

O/E, observed-to-expected.