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Unformatted text preview: the Score
test for assessing the proportional odds and parallel
slopes assumptions due to its extreme anti-conservatism.
Hence, we used graphical methods to assess the validity
of these assumptions. Although we have illustrated the
general form of Anderson’s Stereotype logistic model,
we did not fit this model to our data due to the lack of
availability of statistical software. APPLICATION
The data described in Table 3 were derived from the Nova
Scotia Atlee perinatal database of the Reproductive Care
Program of Nova Scotia, Canada. The ordinal response
variable ‘degree of laceration’ refers to the wounds of
the perineum as a consequence of performing an episiotomy. Episiotomy is an obstetric surgical procedure for
the enlargement of the vaginal opening just prior to delivery.17 There are two commonly accepted techniques
for episiotomy: midline and mediolateral procedures. The
midline procedure is performed by making a midline perineal incision and directed toward the rectum. The mediolateral procedure is performed by making a perineal i...
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- Spring '11