Table 1.

Population characteristics at baseline (1 September 2005)

	Number of cases (n)	Percentage (%)
Total	444,220
Gender
Female	227,393	51.2
Male	216,827	48.8
Age groups
18-25 years	66,677	15.0
26-35 years	83,919	18.9
36-45 years	91,255	20.5
46-55 years	76,679	17.3
56-65 years	58,968	13.3
66-75 years	37,783	8.5
76-85 years	22,997	5.2
85+ years	5,942	1.3