# orwg: Odds ratio of existence of within-group ties In netseg: Measures of Network Segregation and Homophily

 orwg R Documentation

## Odds ratio of existence of within-group ties

### Description

Odds ratio for connected, as opposed to disconnected, dyads depending whether it is between- or within-group, i.e. how much more likely the dyad will be connected if it is within-group.

### Usage

``````orwg(object, ...)

## S3 method for class 'table'
orwg(object, ...)

## S3 method for class 'igraph'
orwg(object, vattr, ...)

## Default S3 method:
orwg(object, ...)
``````

### Arguments

 `object` R object, see Details for available methods `...` other arguments passed to/from other methods `vattr` character scalar or any vector, name of the vertex attribute or the attribute itself (as a vector)

### Details

The measure takes values, like all odds ratios, from (0; Inf).

If `object` is a table it is interpreted as a mixing matrix. Two-dimensional table is interpreted as a contact layer. Three-dimensional table is interpreted as a full mixing matrix `m_{ghy}` cross-classyfying all dyads, in which `g` and `h` correspond to group membership of ego and alter respectively. Layers `y=1` and `y=2` are assumed to be non-contact and contact layers respectively.

If `object` is of class "igraph" it is required to supply `vattr` with the name of the vertex attribute to calculate intermediate mixing matrix.

### Value

Numeric value of the measure.

### References

Moody, Jim (2001) "Race, school integration, and friendship segregation in America", American Journal of Sociology, 107(3):679–377

Other segregation measures: `assort()`, `coleman()`, `ei()`, `freeman()`, `gamix()`, `smi()`, `ssi()`
``````orwg(WhiteKinship, "gender")