Table 2

The major contribution for the geographical variation comes from the communities with high incidence, especially from children 6–10 years of age at diagnosis

		df	χ² Value	p Value
Communities with increased risk	11–15 years	6	16.75	0.01
	6–10 years	6	27.05	0.000
	0–5 years	6	13.2	0.04
Communities with decreased risk	11–15 years	10	6.9	0.73
	6–10 years	10	13.39	0.20
	0–5 years	10	13.78	0.18