Table 2.

Annual incidence, mortality and SMR of hip fracture among young adults in Taiwan

	Incidence (95 % CI)a			Mortality (95 % CI) b			SMR(95 % CI)c
	Overall	Male	Female	Overall	Male	Female	Overall	Male	Female
2001	7.68(7.06–8.30)	11.09(10.04–12.13)	4.15(3.49–4.80)	1.37(0.43–2.31)	1.86(0.58–3.14)	0.00(0.00–0.00)	9.06(8.82–9.30)	10.32(10.02–10.62)	0.00(0.00–0.00)
2002	7.25(6.65–7.86)	10.70(9.67–11.73)	3.69(3.07–4.30)	1.45(0.45–2.44)	1.93(0.60–3.25)	0.00(0.00–0.00)	9.82(9.56–10.08)	11.04(10.72–11.36)	0.00(0.00–0.00)
2003	7.24(6.64–7.85)	11.19(10.14–12.24)	3.16(2.59–3.73)	1.81(0.70–2.93)	1.85(0.58–3.12)	1.69(0.00–4.02)	11.42(11.14–11.70)	10.07(9.77–10.37)	24.67(23.77–25.57)
2004	7.77(7.15–8.40)	11.84(10.75–12.92)	3.57(2.96–4.18)	1.19(0.31–2.06)	1.32(0.27–2.36)	0.75(0.00–2.22)	7.27(7.05–7.49)	6.86(6.62–7.10)	11.42(10.85–11.99)
2005	8.10(7.46–8.75)	12.06(10.96–13.16)	4.02(3.37–4.66)	1.31(0.41–2.21)	1.30(0.27–2.33)	1.34(0.00–3.19)	8.39(8.16–8.62)	7.00(6.76–7.24)	20.83(20.10–21.56)
2006	7.52(6.90–8.15)	11.54(10.46–12.62)	3.39(2.80–3.99)	0.89(0.11–1.66)	0.68(0.00–1.46)	1.60(0.00–3.80)	5.73(5.53–5.93)	3.78(3.60–3.96)	25.66(24.77–26.55)
2007	7.23(6.62–7.84)	10.18(9.16–11.20)	4.20(3.54–4.87)	1.12(0.23–2.01)	1.31(0.17–2.44)	0.65(0.00–1.92)	8.19(7.95–8.43)	7.78(7.50–8.06)	11.03(10.51–11.55)
2008	7.23(6.61–7.84)	11.29(10.21–12.37)	3.07(2.50–3.63)	0.94(0.12–1.75)	0.95(0.02–1.87)	0.89(0.00–2.64)	6.71(6.49–6.93)	5.89(5.66–6.12)	15.04(14.32–15.76)
P d	0.6519	0.9885	0.5415	0.0464	0.0094	0.2806	0.0781	0.0241	0.2043

^aIncidence = the number of new cases/the population total in the middle of the calendar year * 100,000

^bMortality = the number of deaths/the number of new cases in the calendar year * 100

^cAnnual SMRs were calculated from the date of first diagnosis of hip fracture in that calendar year to one year later

^dThe P value were calculated based on t test, which was used to assess the trend of the rates/ratios increased/decreased with the calender years