Re: Number needed to treat I
The endgame says that answer d is the best description., where d is
d)Treatment of 23 patients with chloramphenicol will result in one less infection than if they had received the control treatment
It further adds, "The incidence of infection within 30 days of the minor skin excision was lower for the topical chloramphenicol ointment group than for the control group. Number needed to treat summarises this treatment effect, it being a measure of the benefit of treatment with chloramphenicol compared with control. The number needed to treat is the number of participants who need to be treated with chloramphenicol for one less patient to experience an infection (benefit from the intervention) than if they had received the control treatment."
Here we would like to interject that period of follow-up should also be mentioned as the observation changes with the length of follow-up. Therefore option d will be written as follows:
Treatment of 23 patients with chloramphenicol will result in one less infection than if they had received the control treatment within 30 days of follow-up.
Competing interests: No competing interests