consistency: MSC network meta-analysis models

In srhaile/mscpredmodel: Multiple Score Comparison of Prediction Models with Network Meta-Analysis

Description

MSC network meta-analysis models

Usage

consistency(x, mods = NULL, ...)

inconsistency(x, mods = NULL, ...)

Arguments

x	A set of aggregated performance score data, as computed with the aggregate_performance function.
mods	Which moderators should be included in the model? These can be any of the same moderators included in get_bs_samples, all others will be ignored.
...	Any other arguments will be passed directly to rma.mv

Details

The consistency and inconsistency models are those found in Law et al 2016:

Specifically, we fit one of two models using "Jackson's Model", as described in the paper, which differ only in their random effects:

consistency

First item

random contrast within study

inconsistency

Second item

random contrast within study, and random contrast within design

Value

The results of an rma.mv multivariate/multilevel Linear (mixed-effects) model (class "rma.mv"), with the following additional components, which can be passed along to other functions: #'

reference

name of reference score

scores

vector of scores analysed

model

If consistency was used, "consistency", else "inconsistency"

performance

Label of performance, as used in previous functions

Functions

• inconsistency: Estimate differences in score performance using inconsistency model

See Also

Law, M.; Jackson, D.; Turner, R.; Rhodes, K. & Viechtbauer, W. Two new methods to fit models for network meta-analysis with random inconsistency effects BMC Medical Research Methodology, 2016, 16, 87.

Examples

dat <- msc_sample_data()
bssamp <- get_bs_samples(dat, id, study, outcome, n.samples = 10, 
                  scores = c("a", "b", "c", "d", "e", "f"), 
                  moderators = c("age", "female", "x1"))
perf <- compute_performance(bssamp, fn = calibration_slope, lbl = "CS")
agg <- aggregate_performance(perf)
consistency(agg)
agg.c <- aggregate_performance(perf, "c")
consistency(agg.c)

srhaile/mscpredmodel documentation built on Sept. 13, 2019, 3:44 p.m.