Table 4. Newly diagnosed incidence rate (per 10 000 persons) of hypospadias and exact Poisson 95% CI between 0 and 4 years of age in 2000–2005a.

	Incidence (95% CI)
Year	National	Yeocheon	Ulsan	Chuncheon
2000	1.40	11.42 (0.29–63.6)	0.23 (0.01–1.26)	0 (0–4.31)
2001	2.59	0 (0–43.71)	1.19 (0.39–2.77)	0 (0–4.49)
2002	1.91	0 (0–54.65)	3.85 (2.15–6.35)	0 (0–4.67)
2003	2.99	15.82 (0.40–88.16)	2.21 (0.96–4.36)	2.68 (0.32–9.67)
2004	2.51	16.37 (0.41–91.19)	1.49 (0.48–3.47)	0 (0–5.28)
2005	3.28	14.14 (0.36–78.81)	2.93 (1.34–5.55)	0 (0–5.78)

Abbreviation: CI, confidence interval.

^aYeochon and Ulsan are two industralized cities, while Chuncheon is a non-industrialized area.