Table 2

Crude incidence rate of children with Rolandic epilepsy per 100,000 with 95% confidence intervals by age group and year, and adjusted incidence rate ratios (aIRR) with 95% confidence intervals.

A: Crude incidence rate of children with Rolandic epilepsy per 100 000 with 95% CIs by age group and year
YearAge in years
4–56–89–1112–1415–16
2000–20022.5 (1.1 to 6.1)4.9 (2.6 to 9.1)
2003–20054.6 (2.6 to 8.1)7.6 (5.3 to 10.8)9.9 (6.8 to 14.4)
2006–20083.1 (1.6 to 6.0)6.9 (4.8 to 9.8)8.4 (6.1 to 11.4)3.2 (1.7 to 5.9)
2009–20113.1 (1.7 to 5.7)9.8 (7.3 to 13.0)8.3 (6.1 to 11.3)3.3 (2.1 to 5.4)1.5 (0.6 to 3.9)
2012–20141.9 (0.9 to 3.9)6.1 (4.3 to 8.6)6.9 (4.9 to 9.8)2.7 (1.6 to 4.7)0.6 (0.2 to 2.4)
B. Adjusted incidence rate ratios (aIRR) and 95% CI
aIRR (95% CI)P value
Year0.99 (0.96 to 1.02)0.380
Age group (years)
 4–5Ref<0.0001
 6–82.43 (1.73 to 3.40)
 9–112.77 (1.97 to 3.90)
 12–141.06 (0.69 to 1.64)
 15–160.34 (0.14 to 0.80)
Sex
 FemaleRef0.0002
 Male1.48 (1.20 to 1.82)
  • Estimates are from a Poisson model including fixed effects of year, gender and age group, and a random practice effect and an offset term for mid-year population estimates.