Table 4

Back application of coefficients to the opposite population

CHD type		Area				Total cases		Quintile class		RR 5/1
CHD type		Area				Total cases		1	2	RR 5/1	3	4	5
CHDD	Coefficients of NE applied to SE		Observed	113	5	5	16	34	54	10.2
	Coefficients of NE applied to SE		Expected	166.2	7.6	14.5	22.4	35.1	86.6	11.4
		E/O ratio	1.47

CHDD	Coefficients of SE applied to NE		Observed	114	4	6	17	31	56	14.0
	Coefficients of SE applied to NE		Expected	70.0	4.6	7.8	10.9	15.6	31.1	6.7
		E/O ratio	0.61

CHDH	Coefficients of NE applied to SE		Observed	192	13	26	39	38	76	5.8
	Coefficients of NE applied to SE		Expected	316.6	18.4	32.7	47.9	71.1	146.5	8.0
		E/O ratio	1.65

CHDH	Coefficients of SE applied to NE		Observed	190	11	12	34	55	78	7.1
	Coefficients of SE applied to NE		Expected	113.4	9.0	14.3	19.3	26.1	44.7	4.9
		E/O ratio	0.60

CHDA	Coefficients of NE applied to SE		Observed	395	36	52	86	74	147	4.1
	Coefficients of NE applied to SE		Expected	703.5	60.5	95.6	122.3	162.2	265.9	4.4
		E/O ratio	1.78

CHDA	Coefficients of SE applied to NE		Observed	391	40	48	67	96	140	3.5
	Coefficients of SE applied to NE		Expected	201.0	20.0	28.2	35.3	45.1	72.4	3.6
		E/O ratio	0.51