| piecewise | R Documentation | 
Calculate piecewise hazards, no. of events, and exposure times in each interval indicated by cutpoints.
piecewise(enter, exit, event, cutpoints)
| enter | Left interval endpoint | 
| exit | Right interval endpoint | 
| event | Indicator of event | 
| cutpoints | Vector of cutpoints | 
Exact calculation.
A list with components
| events | Vector of number of events | 
| exposure | Vector of total exposure time | 
| intensity | Vector of hazards,  | 
Göran Broström
perstat
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