Create intervention objects from Rx input
See details below for Rx specification. Actual parsing is done by parse_rx; this function can be used to debug Rx inputs.
ev_rx(x, y, ...) ## S4 method for signature 'mrgmod,character' ev_rx(x, y, ...) ## S4 method for signature 'character,missing' ev_rx(x, df = FALSE, ...) parse_rx(x)
x |
a model object or |
y |
|
... |
not used at this time |
df |
if |
The method dispatched on model object (mrgmod) returns another
model object. The character method returns an event object. The
parse_rx function return a list named with
arguments for the event object constructor ev.
The dose is found at the start of the string by sequential digits; this may be integer, decimal, or in scientific notation
Use in to identify the dosing compartment number; must be integer
Use q to identify the dosing interval; must be integer or
decimal number (but not scientific notation)
Use over to indicate an infusion and its duration; integer or
decimal number
Use x to indicate total number of doses; must be integer
Use then or , to separate dosing periods
User after to insert a lag in the start of a period; integer or
decimal number (but not scientific notation)
# example("ev_rx")
ev_rx("100")
ev_rx("100 in 2")
ev_rx("100 q12 x 3")
ev_rx("100 over 2")
ev_rx("100 q 24 x 3 then 50 q12 x 2")
ev_rx("100 then 50 q 24 after 12")
ev_rx("100.2E-2 q4")
ev_rx("100 over 2.23")
ev_rx("100 q 12 x 3")
parse_rx("100 mg q 24 then 200 mg q12")Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.