metapsyNNT: Calculate NNTs

In MathiasHarrer/metapsyTools: Several R Helper Functions For The "Metapsy" Database

Calculate NNTs

Description

Calculate NNTs (extracted from dmetar)

Usage

metapsyNNT(d, CER, event.e, n.e, event.c, n.c, names, method)

Arguments

d	A single numeric or concatenated vector of numerics representing the effect size expressed as Cohen's d or Hedges' g. If this is the only parameter specified in the function, the method by Kraemer and Kupfer is used automatically to calculate NNTs.
CER	The control group event ratio. Furukawa's method (Furukawa & Leucht, 2011) to calculate NNTs from d requires that the assumed response ("event") ratio in the control group (\frac{n_{responders}}{N_{total}}) is specified. The CER can assume values from 0 to 1. If a value is specified for CER, Furukawa's method is used automatically. Argument method has to be set to "KraemerKupfer" to override this.
event.e	Single number or numeric vector. The number of (favourable) events in the experimental group.
n.e	Single number or numeric vector. The number participants in the experimental group.
event.c	Single number or numeric vector. The number of (favourable) events in the control group.
n.c	Single number or numeric vector. The number of participants in the control group.
names	Optional. Character vector of equal length as the vector supplied to d or event.e containing study/effect size labels.
method	The method to be used to calculate the NNT from d. Either "KraemerKupfer" for the method proposed by Kraemer and Kupfer (2006) or "Furukawa" for the Furukawa method (Furukawa & Leucht, 2011). Please note that the Furukawa's method can only be used when CER is specified.

MathiasHarrer/metapsyTools documentation built on May 1, 2022, 5:14 p.m.