Table 4

Age-specific and gender-specific incidence of MS using GPRD alone and GPRD with HES (1997–2010)

	Patient years (thousands)	GPRD only where HES available		GPRD plus HES
	Patient years (thousands)	New cases	Incidence (/10⁵/year)	New cases	Incidence (/10⁵/year)
Male
Under 10	841.0	0	0.00	1	0.11
10–19	1146.2	6	0.52	7	0.61
20–29	974.8	40	4.10	42	4.30
30–39	1294.1	100	7.72	107	8.26
40–49	1429.6	129	9.02	143	10.00
50–59	1301.4	97	7.45	123	9.45
60–69	1013.5	53	5.22	75	7.39
70–79	675.6	16	2.36	50	7.40
80–89	296.2	4	1.35	14	4.72
90 Plus	40.1	0	0	4	9.98
Total	9012.6	445	4.93	566	6.28
Female
Under 10	804.1	0	.00	0	0.00
10–19	1035.0	7	.67	10	0.96
20–29	870.3	111	12.75	121	13.90
30–39	1250.0	282	22.55	300	23.99
40–49	1387.4	333	24.00	358	25.80
50–59	1277.1	223	17.46	270	21.14
60–69	1035.5	104	10.04	142	13.71
70–79	810.7	25	3.08	78	9.62
80–89	499.2	7	1.40	35	7.01
90 Plus	117.9	1	0.84	6	5.08
Total	9087.3	1093	12.02	1320	14.52

GPRD, General Practice Research Database; HES, Hospital Episode Statistics; MS, multiple sclerosis.