Research Article

A Novel Model of Schizophrenia Age-of-Onset Data Challenges the Conventional Interpretations of the Discordance in Monozygote Twin Studies

Table 1

Values of model parameters for the independent mutation model fits to USA schizophrenia first hospital admissions data (males M, females F, and males + females, M + F).

CohortNumber of parameters in model
mutation number
or
mutation rate in (years)−1  

mutation rate in (years)−1   ]

lifetime risk
chisq error in (years)−2

USA males3100.081720.00137
USA males4160.116530.0284650.0015737
USA females4160.098590.0357280.0016428
USA males + females4160.107570.0299590.0016363