maicLP {maicChecks}

Checks if AD is within the convex hull of IPD using lp-solve

Description

Checks if AD is within the convex hull of IPD using lp-solve

Usage

maicLP(ipd, ad)

Arguments

ipd

a dataframe with n row and p coln, where n is number of subjects and p is the number of variables used in matching.

ad

a dataframe with 1 row and p coln. The matching variables should be in the same order as that in ipd. The function does not check this.

Value

lp.check

0 = AD is inside IPD, and MAIC can be conducted; 2 = otherwise

Author(s)

Lillian Yau

References

Glimm & Yau (2021). Geometric approaches to assessing the numerical feasibility for conducting matching-adjusted indirect comparisons. arXiv 2108.01896.

Examples

## eAD[1,] is the scenario A in the reference paper,
## i.e. when AD is within IPD convex hull
maicLP(eIPD, eAD[1,2:3])

## eAD[3,] is the scenario C in the reference paper,
## i.e. when AD is outside IPD convex hull
maicLP(eIPD, eAD[3,2:3])