OptionaladjustcohensD only: apply Hedges' small-sample correction (the result is Hedges' g). Default false.
Optionalalternative"two.sided" (default), "less" or "greater": a one-sided interval is open on the other side.
OptionalciConfidence level of the interval, or null for no interval. Default 0.95.
OptionalmuThe difference (or mean) under the null hypothesis. Default 0.
OptionalpairedPaired samples: the effect size of the differences x - y. Default false.
OptionalpooledTwo samples: standardize by the pooled standard deviation (default true) or by sqrt((s1² + s2²)/2).
Options for cohensD and hedgesG.