Frequency
q.o.d.
Every other day
Risk
Can be mistaken for "q.d." or "q.i.d."
Safer Alternative
Write "every other day"
Example
q.o.d. misread as q.d.
Every other day
Can be mistaken for "q.d." or "q.i.d."
Write "every other day"
q.o.d. misread as q.d.