Fig. 5

Scatter plot of AIC for different statistical methods against the number of possible observable values of SF-36 domains in three RCT datasets. Note that median and CLAD regression do not have AIC scores, and thus are not compared in this figure. These methods are classified according to their distributional assumptions on SF-36 domain scores. AIC, Akaike information criterion; MLR, multiple linear regression; Tobit, Tobit regression; OL, ordered logit model, OP, ordered probit model, BB, beta-binomial regression; BLN, binomial-logit-normal regression; frac, fractional logistic regression; BR, beta regression