TABLE 3.

Annual incidence of first unprovoked seizures and new diagnosis of epilepsy per 100 000 population in those aged 28 days to 14 years of age and in those 15 years of age and older in the most deprived electoral divisions compared to the least deprived electoral divisions

Quintile	Study population, n	First unprovoked seizure		New diagnosis of epilepsy
		n	Incidence (95% CI)	n	Incidence (95% CI)
Persons 28 days–14 years old
1 [most deprived]	20 341	20	98.3 (61.8–149.1)	21	103.2 (65.6–155.1)
			IR = 1.91 (.91–3.98), p = .08		IR = 2.20 (1.04–4.68), p = .03
2	22 862	19	83.1 (51.5–127.3)	14	61.2 (33.9–100.3)
			IR = 1.61 (.77–3.89), p = .20		IR = 1.31 (.58–2.94), p = .52
3	24 233	19	78.4 (48.6–120.15)	15	61.9 (36.0–99.8)
			IR = 1.52 (.72–3.20), p = .26		IR = 1.32 (.59–2.94), p = .49
4	24 761	20	80.8 (50.7–122.5)	18	72.7 (44.4–112.6)
			IR = 1.57 (.75–3.27), p = .23		IR = 1.55 (.72–3.36), p = .26
5 [least deprived]	21 334	11	51.6 (27.1–89.6)	10	46.9 (23.8–83.5)
			Reference		Reference
p for trend		p = .13	p = .07
Persons ≥ 15 years old
1 [most deprived]	88 412	70	79.2 (62.2–99.4)	64	72.4 (56.2–91.8)
			IR = 1.76 (1.19–2.60), p = .004	73	IR = 1.74 (1.16–2.62), p = .007
2	85 534	72	84.2 (66.4–105.4)		85.3 (67.4–106.7)
			IR = 1.87 (1.27–2.76), p = .001		IR = 2.05 (1.38–3.06), p < .001
3	84 371	43	51.0 (37.4–68.0)	33	39.1 (27.4–54.3)
			IR = 1.13 (.74–1.75), p = .57		IR = .94 (.59–1.51), p = .80
4	84 410	45	53.3 (39.4–70.7)	42	49.8 (36.3–66.6)
			IR = 1.18 (.77–1.82), p = .44		IR = 1.20 (.77–1.87), p = .43
5 [least deprived]	86 610	39	45 (32.5–60.9)	36	41.6 (29.6–56.9)
			Reference		Reference
p for trend		p = .0003	p = .0002

Note: Trend was calculated by logistic regression of median Relative Deprivation Index for cases and noncases in each quintile.

Abbreviations: CI, confidence interval; IR, incidence ratio.