Table 3. Most prevalent triplets (three ways disease combinations).

Order	Cancer	Heart	HBP	Stroke	Diabetes	Asthma/Hayfever	Bronchitis/Emphysema	Arthritis	Osteoporosis	Depression (& anxiety)	Combination, n (%)	Prevalence	Observed÷Expected	Chi2 (p value)A
1			X			X		X			192 (4.2)	4.3	1.6	16.7 (<0.01)
2	X		X					X			179 (3.9)	3.5	1.3	6.1 (0.01)
3		X	X					X			175 (3.8)	3.2	1.5	13.8 (<0.01)
4			X					X		X	164 (3.6)	3.7	1.7	17.1 (<0.01)
5			X		X			X			155 (3.4)	2.8	1.8	19.0 (<0.01)
6						X		X		X	105 (2.3)	2.7	2.8	33.1 (<0.01)
7	X	X	X								102 (2.2)	1.9	1.7	15.5 (<0.01)
8		X	X		X						88 (1.9)	1.5	2.2	18.3 (<0.01)
9			X			X				X	88 (1.9)	2.3	1.9	12.6 (<0.01)
10	X	X						X			79 (1.7)	1.7	1.6	7.7 (<0.01)
11	X		X			X					79 (1.7)	1.8	1.2	1.2 (0.28)
12	X		X		X						74 (1.6)	1.3	1.5	5.6 (0.02)
13	X					X		X			73 (1.6)	1.8	1.4	4.0 (0.05)
14	X							X		X	71 (1.6)	1.6	1.5	8.1 (<0.01)
15		X	X			X					69 (1.5)	1.4	1.2	1.6 (0.21)

^A Test of independence for observed and expected prevalences.