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Colecistite Aguda. Aspectos Clínicos e Experimentais
In the statistical analysis we resorted to continuous or discontinuous
variables; quantitativeness was compared by the t test of Student or ANOVA,
or, alternatively using non-parametric tests (AAann-Whitney and Kinshale-
Walley), when indicated.
Fisher.
The proportions were compared by the c 2 test or by the exact test of
The greatness of association between variables was measured by the Odds
Ratios (OR) calculation and respective intervals of reliability at 95%, using the
EGRET programme to carry out non-conditional logistic regression. The
comparison of the 2 groups (A-laparoscopic surgery and B - by laparotomy),
provided the following results: absence of significant differences with regards
to age, sex, choledocho-lithiasis and acute pancreatitis, pain in the right
hypochondrium, sickeness and jaundice ecographic data, galbladder pathology
and bacteriobilia.
Palpable gallbladder and temperature above 38°C and leucocytosis were
higher in group B than in group A.
The univaried analysis of the various parameters allowed for the following
conclusions: better results obtained with laparoscopic surgery with regards to
morbidity (10% in group A and 32% in group B), operative mortality (0 to
2% although it has no statistical relevance here) and shorter hospital stay (5
days in group A and 12 in group B). There were no differences regarding the
results obtained in relation to the present state of the 2 groups of patients
operated on.
This study was completed with the statistical analysis referring to the
identification of possible preoperative factors of conversion in the 100 patients
operated on by laparoscopy. Thus, 2 subgroups were considered, whether
conversion was performed or not (AI -not converted; A2 - converted in
laparotomy). The incidence of conversion was of 24%, with anatomical
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