Table 4.

Relative risk of being exposed to non-traumatic SCFE for boys compared to girls aged 5–19 years, per year and over the entire study period 1998–2010

Study year	RR [95 % CI]: M vs. F
1998	1.23 [0.61–2.47]
1999	0.96 [0.48–1.91]
2000	1.56 [0.74–3.31]
2001	1.67 [0.82–3.40]
2002	1.30 [0.72–2.36]
2003	1.31 [0.69–2.50]
2004	0.76 [0.40–1.47]
2005	1.09 [0.53–2.24]
2006	0.89 [0.43–1.85]
2007	0.68 [0.36–1.26]
2008	0.64 [0.32–1.25]
2009	0.92 [0.53–1.59]
2010	0.59 [0.30–1.18]
1998–2010	0.99 [0.82–1.18]