Age of OnsetAge FactorsMenarcheParityRisk FactorsReproductive HistoryGenetic Predisposition to DiseaseCase-Control StudiesCohort StudiesMenopauseOdds RatioPedigreeSexual BehaviorBreast NeoplasmsUterine Cervical NeoplasmsPregnancyHuntington DiseaseSmokingGenotypeFamily HealthTrinucleotide RepeatsRetrospective StudiesSex FactorsPhenotypeMutationAllelesFollow-Up StudiesGenetic LinkageTime FactorsAnticipation, GeneticInfant, NewbornSpinocerebellar DegenerationsLod ScoreDisease ProgressionFamilySeverity of Illness IndexDNA Mutational AnalysisIncidencePubertyNuclear FamilySchizophrenia, CatatonicPrevalencePenetrancePrecipitating FactorsPolymorphism, GeneticGenes, DominantPaternal AgeProspective StudiesAge DistributionLongitudinal StudiesDiabetes Mellitus, Type 1HeterozygoteAgingCerebellar AtaxiaParkinson DiseasePolymorphism, Single NucleotideGenetic Testing