\title{studies on the reliability of the mibs scale}
\description{results from 26 studies on the reliability of the mother-to-infant bonding scale (mibs).}
\bold{studyid}      \tab \code{numeric}   \tab study id \cr
\bold{esid}         \tab \code{numeric}   \tab effect size id \cr
\bold{author}       \tab \code{character} \tab author(s) of the study \cr
\bold{pubtype}      \tab \code{character} \tab publication type (article or thesis) \cr
\bold{country}      \tab \code{character} \tab country \cr
\bold{participants} \tab \code{character} \tab participant characteristics \cr
\bold{n}            \tab \code{numeric}   \tab sample size \cr
\bold{alpha}        \tab \code{numeric}   \tab cronbach's alpha \cr
\bold{items}        \tab \code{numeric}   \tab number of items in the scale
the mother-to-infant bonding scale (mibs) is an 8-item likert-type questionnaire to evaluate caregiver-infant attachment. demir et al. (2022) carried out a meta-analysis of 26 studies (reporting 33 cronbach's alpha values) to assess the reliability of the scale.
demir, e., öz, s., aral, n., & gürsoy, f. (2022). a reliability generalization meta-analysis of the mother-to-infant bonding scale. \emph{psychological reports}, \bold{127}(1), 447--464. \verb{https://doi.org/10.1177/00332941221114413}
### transform the alpha values using the bonett (2022) transformation
dat <- escalc(measure="abt", ai=alpha, ni=n, mi=items, data=dat)
psychology, cronbach's alpha, reliability generalization

\title{studies on antithrombotic treatments to prevent strokes}
\description{results from 20 trials examining the effectiveness of antithrombotic treatments to prevent strokes in patients with non-valvular atrial fibrillation.}
\bold{stroke}    \tab \code{numeric}   \tab number of strokes \cr
this dataset comes from a systematic review aiming to estimate the effects of eight antithrombotic treatments including placebo in reducing the incidence of major thrombotic events in patients with non-valvular atrial fibrillation (dogliotti et al., 2014).
the review included 20 studies with 79,808 participants, four studies are three-arm studies. the primary outcome is stroke reduction (yes / no).
dogliotti, a., paolasso, e., & giugliano, r. p. (2014). current and new oral antithrombotics in non-valvular atrial fibrillation: a network meta-analysis of 79808 patients. \emph{heart}, \bold{100}(5), 396--405. \verb{https://doi.org/10.1136/heartjnl-2013-304347}
### show first 7 rows / 3 studies of the dataset
### change appearance of confidence intervals
pw <- pairwise(treat = treatment, n = total, event = stroke,
studlab = study, data = dat.dogliotti2014, sm = "or")
### print log odds ratios (te) and standard errors (sete)
### conduct network meta-analysis (nma) with placebo as reference
selvars <- c("studlab", "event1", "n1", "event2", "n2")
subset(pw, studlab == "waspo, 2007")[, selvars]
netgraph(net, seq = "optimal", number = true)
### compare results of inverse variance and mantel-haenszel nma
nb <- netbind(net, net.mh, random = false,
name = c("inverse variance", "mantel-haenszel"))
### print and plot results for inverse variance nma
medicine, odds ratios, network meta-analysis, mantel-haenszel method