Table 4.

Summary of results*

Statistic	Value
Mean incidence	9.3/100 000 (95% CI 2.50–16.19)
Median incidence	5.5/100 000
Maximum reported incidence	41.0/100 000
Minimum reported incidence	1.2/100 000
Max/min ratio	36:1
Range	39.9
25th percentile	4.2/100 000
75th percentile	7.3/100 000
Inter-quartile range	3.1
Weighted mean incidence	8.8/100 000
Geographically adjusted weighted mean	12.7/100 000

*Incidence is expressed in person-years, with 95% confidence (CI) interval.