datecut: Generating Optimal cuts for the Data
In PDN: Personalized Disease Network

Description Usage Arguments Details Value Examples

Performs Cox proportional hazards regression model on patients survival days based on different cutoffs

1	datecut(x, surdays, event)

`x`	comorbidity data matrix with column correspond to ICD9 codes and row correspond to each patient
`surdays`	survival days for each patient
`event`	indictor variable 1 represent patient died 0 represent patient survive

Building and draw personized disease network

a vector of cutoff points that maximize the Z statistics for cox model between each Diagnosis/Procedure A to another Diagnosis/Procedure B

comorbidity_data
survival_data
#Select a subset of data for toy example
comorbidity_data = comorbidity_data[c(1:10),]
survival_data = survival_data[c(1:10),]
k1 = datecut(comorbidity_data,survival_data[,1],survival_data[,2])