Risk of death or transplant in 882 children with hypertrophic cardiomyopathy, by number of cause-specific risk factors. Data are from the Pediatric Cardiomyopathy Registry for the period between 1990 and 2002. [From Lipshultz SE, Orav EJ, Wilkinson JD, Towbin JA, Messere J, Lowe AM, Sleeper LA, Clunie SK, Cox GF, Lurie PR, Hsu DT, Canter CE, Colan SD. A risk stratification analysis of predictors of death or transplant in children with hypertrophic cardiomyopathy. Circulation Supplement. 2008;118:4956.]