TABLE 2

Prevalence of Definite and Probable Male Cases (n = 649) per 10 000 Boys, Ages 5 to 9 Years, Identified by MD STARnet, 1991–2010

QuinquenniumCasesPopulationPrevalence95% CI
Definite and probable cases1991–1995150778 7161.93(1.63–2.26)
1996–2000178869 3212.05(1.76–2.37)
2001–2005179879 3002.04(1.75–2.36)
2006–2010142942 7911.51(1.27–1.78)
Race/ethnicity
 Non-Hispanic white1991–199598538 9811.82(1.48–2.22)
1996–2000108537 2392.01(1.65–2.43)
2001–2005105512 2062.05(1.68–2.48)
2006–201088504 2011.75(1.40–2.15)
 Non-Hispanic black1991–19959121 9650.74(0.34–1.40)
1996–200016139 1991.15(0.66–1.87)
2001–200513135 3290.96(0.51–1.64)
2006–201010144 4760.69(0.33–1.27)
 Hispanic1991–19952888 5703.16(2.10–4.57)
1996–200038141 0422.69(1.91–3.70)
2001–200538176 7682.15(1.52–2.95)
2006–201027220 0401.23(0.81–1.79)
Phenotype
 DMD1991–1995117778 7161.43(1.17–1.72)
1996–2000127869 3211.46(1.22–1.74)
2001–2005141879 3001.60(1.35–1.89)
2006–2010111942 7911.18(0.97–1.42)
 BMD1991–199539778 7160.50(0.36–0.68)
1996–200050869 3210.58(0.43–0.76)
2001–200537879 3000.42(0.30–0.58)
2006–201030942 7910.32(0.21–0.45)
  • CI, confidence interval.