Table 1

Annual incidence and mortality rates per 100 000 for meningococcal disease by time period and area deprivation scores

	Townsend deprivation score (quintiles)
	1991–94					1995–99
	Most affluent	2nd	3rd	4th	Most deprived	Most affluent	2nd	3rd	4th	Most deprived
Boys
Incidence rate per 100 000	15.4	19.4	26.2	31.0	39.2	33.5	35.5	41.0	52.3	63.0
Risk ratio	0.59	0.74	1.0	1.19	1.50	0.82	0.86	1.0	1.27	1.54
(95% CI)	0.47 to 0.73	0.61 to 0.90		1.02 to 1.38	1.31 to 1.72	0.71 to 0.94	0.76 to 0.99		1.15 to 1.42	1.39 to 1.69
Mortality rate per 100 000	0.7	1.1	1.3	2.1	2.0	0.6	1.4	1.1	1.9	2.2
Risk ratio	0.53	0.85	1.0	1.69	1.56	0.59	1.32	1.0	1.77	2.03
(95% CI)	0.19 to 1.49	0.36 to 2.00		0.89 to 3.22	0.84 to 2.89	0.23 to 1.54	0.64 to 2.73		0.95 to 3.27	1.14 to 3.63

Girls
Incidence rate per 100 000	11.6	16.2	19.5	27.6	33.0	27.4	30.0	36.2	40.9	51.0
Risk ratio	0.60	0.84	1.0	1.42	1.70	0.76	0.83	1.0	1.13	1.41
(95% CI)	0.46 to 0.77	0.67 to 1.04		1.19 to 1.69	1.45 to 1.99	0.65 to 0.89	0.72 to 0.96		1.00 to 1.27	1.27 to 1.57
Mortality rate per 100 000	0.1	1.5	1.0	1.8	2.1	0.7	1.4	0.9	1.2	2.1
Risk ratio	0.14	1.49	1.0	1.77	2.02	0.76	1.58	1.0	1.36	2.29
(95% CI)	0.02 to 1.09	0.64 to 3.45		0.85 to 3.67	1.02 to 4.00	0.28 to 2.06	0.72 to 3.47		0.66 to 2.81	1.20 to 4.36