search for: symphysis

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2012 Mar 21
0
multivariate ordinal probit regression vglm()
...logit or probit regression techniques (e.g., proportional odds logit/probit, forward/backward continuation ratio, or restricted/unrestricted cumulative probit). Data typically include the predictor (age) and one or more response variables (the stages of skeletal morphology). For example, the pubic symphysis and auriclar surface (two joint surfaces of the pelvis) may be observed in three and four stages, respectively (see sample dataframe "refdata" below). age pube3 auric4 1 32 3 2 2 42 3 2 3 27 2 1 4 39 2 1...