Table 1.

Incidence of slipped capital femoral epiphysis*.

Study	Year	City, Country	Region	Ethnicity	Incidence
Kelsey et al. [37]⋀	1970	Connecticut and New Mexico		All: <25 years old
				Connecticut	3.41
				New Mexico	0.71
		Connecticut and New Mexico		All age restricted
				Connecticut	10.08
				New Mexico	2.13
		Connecticut		White
				Male	4.74
			North America	Female	1.64
				African
				Male	7.79
				Female	6.68
				White
				Urban	3.19
				Other	3.19
				African
				Urban	7.95
				Other	1.35
Benson et al. [32]	2008	New Mexico	North America	All	6.05
				White	2.59
				Hispanic	5.49
				Native American	5.49
				African	11.57
Lehmann et al. [31]	2006	United States	North America	All	10.80
				Male	13.35
				Female	8.07
				White	6.24
				Hispanic	15.80
				Native American	5.13
				African	24.58
				Asian/Pacific Islanders	10.11
				Northeast	17.15
				Midwest	7.69
				South	8.12
				West	12.70
Larson et al. [39]	2010	Minnesota	North America	All	8.8
Jerre et al. [42]	1996	Gothenburg, Sweden	Scandinavia	All	7.1
				Male	9.0
				Female	5.1
Henrikson [43]	1969	Gothenburg, Sweden	Scandinavia	All	8.2
Hägglund et al. [34]	1984	Southern Sweden	Scandinavia	All
				Male	7.1
				Female	5.3
				Rural
				Male	7.5
				Female	2.2
				Urban
				Male	4.8
				Female	3.8
Murray and Wilson [40]	2008	Scotland	Europe	All
				1981	3.78
				2000	9.66
Noguchi and Sakamaki [38]	2002	Japan	Asia	All	1.51
				Male	2.22
				Female	0.76
Lim et al. [33]	2008	Singapore	Asia	All	1.2
Ninomiya et al. [36]	1976	Japan	Asia	All	0.25
Song et al. [44]	2009	Korea	Asia	All	0.33
				Male	0.50
				Female	0.14

^⋀the overall breakdowns by gender and race (unrestricted) are given as incidence per 100,000 for all <25 years of age, while the other numbers are for boys 10–17 years old and girls 8–15 years old.

*incidence for children 8–15 years of age.